find the value of x. ANSWER IS NOT 31.9. NO LINKS OR SPAMS. THANKS FOR THE HELP!!!!

Answer:
x = 7.0588235294
Step-by-step explanation:
similar triangles have the same proportion for corresponding sides
long leg / hypotenuse ratio
small triangle to big triangle
x/8 = 15/17
Multiply both sides by 8
x = 15/17 * 8
x = 7.0588235294