Finding the Fourth Proportional to 17,168.72, 23,691.48 and 9,716.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,168.72 : 23,691.48 = 9,716.72 : x
2. Step 2: Convert to fraction form
   17,168.72/23,691.48 = 9,716.72/x
3. Step 3: Cross multiply
   17,168.72x = 23,691.48 × 9,716.72
4. Step 4: Simplify right side
   17,168.72x = 230,203,477.55
5. Step 5: Solve for x
   x = 230,203,477.55/17,168.72
6. Step 6: Final answer
   x = 13,408.31