Finding the Fourth Proportional to 22,762.17, 31,411.92 and 12,691.24

Step by Step Solution

1. Step 1: Write the proportion equation
   22,762.17 : 31,411.92 = 12,691.24 : x
2. Step 2: Convert to fraction form
   22,762.17/31,411.92 = 12,691.24/x
3. Step 3: Cross multiply
   22,762.17x = 31,411.92 × 12,691.24
4. Step 4: Simplify right side
   22,762.17x = 398,656,215.58
5. Step 5: Solve for x
   x = 398,656,215.58/22,762.17
6. Step 6: Final answer
   x = 17,513.98