Finding the Fourth Proportional to 22,762.86, 31,414.35 and 12,691.98

Step by Step Solution

1. Step 1: Write the proportion equation
   22,762.86 : 31,414.35 = 12,691.98 : x
2. Step 2: Convert to fraction form
   22,762.86/31,414.35 = 12,691.98/x
3. Step 3: Cross multiply
   22,762.86x = 31,414.35 × 12,691.98
4. Step 4: Simplify right side
   22,762.86x = 398,710,301.91
5. Step 5: Solve for x
   x = 398,710,301.91/22,762.86
6. Step 6: Final answer
   x = 17,515.83