Finding the Fourth Proportional to 22,557.42, 31,139.37 and 14,502.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,557.42 : 31,139.37 = 14,502.78 : x
2. Step 2: Convert to fraction form
   22,557.42/31,139.37 = 14,502.78/x
3. Step 3: Cross multiply
   22,557.42x = 31,139.37 × 14,502.78
4. Step 4: Simplify right side
   22,557.42x = 451,607,432.45
5. Step 5: Solve for x
   x = 451,607,432.45/22,557.42
6. Step 6: Final answer
   x = 20,020.35