Finding the Fourth Proportional to 22,561, 31,129.86 and 14,602.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,561 : 31,129.86 = 14,602.12 : x
2. Step 2: Convert to fraction form
   22,561/31,129.86 = 14,602.12/x
3. Step 3: Cross multiply
   22,561x = 31,129.86 × 14,602.12
4. Step 4: Simplify right side
   22,561x = 454,561,951.30
5. Step 5: Solve for x
   x = 454,561,951.30/22,561
6. Step 6: Final answer
   x = 20,148.13