Answer :

To determine the approximate value of [tex]\(\sqrt{19}\)[/tex] using a numerical approach, we'll follow these steps:

1. Understanding the Problem:
We need to find the square root of 19, which is a number [tex]\(x\)[/tex] such that [tex]\(x^2 = 19\)[/tex]. We also need to choose the closest possible value of [tex]\(\sqrt{19}\)[/tex] from the given options: 4.38, 4.13, 4.5, and 425.

2. Finding [tex]\(\sqrt{19}\)[/tex]:
Upon calculation, the approximate value of [tex]\(\sqrt{19}\)[/tex] is found to be 4.358898943540674.

3. Comparing to Given Options:
We need to compare this value to the given options:
- 4.38
- 4.13
- 4.5
- 425

Let's evaluate the proximity of each option to the calculated value of 4.358898943540674:
- The difference between 4.358898943540674 and 4.38 is [tex]\( |4.358898943540674 - 4.38| = 0.021101056459326 \)[/tex]
- The difference between 4.358898943540674 and 4.13 is [tex]\( |4.358898943540674 - 4.13| = 0.228898943540674 \)[/tex]
- The difference between 4.358898943540674 and 4.5 is [tex]\( |4.358898943540674 - 4.5| = 0.141101056459326 \)[/tex]
- The difference between 4.358898943540674 and 425 is [tex]\( |4.358898943540674 - 425| = 420.641101056459326 \)[/tex]

4. Finding the Closest Value:
From the above calculations, the smallest difference is [tex]\(0.021101056459326\)[/tex], which corresponds to the option 4.38.

5. Conclusion:
Comparing all the given options, the closest approximate value to [tex]\(\sqrt{19}\)[/tex] is 4.38.

Thus, the approximate value of [tex]\(\sqrt{19}\)[/tex] is 4.38.