Finding the Fourth Proportional to 22,472.98, 31,143.80 and 22,155.86

Step by Step Solution

1. Step 1: Write the proportion equation
   22,472.98 : 31,143.80 = 22,155.86 : x
2. Step 2: Convert to fraction form
   22,472.98/31,143.80 = 22,155.86/x
3. Step 3: Cross multiply
   22,472.98x = 31,143.80 × 22,155.86
4. Step 4: Simplify right side
   22,472.98x = 690,017,805.92
5. Step 5: Solve for x
   x = 690,017,805.92/22,472.98
6. Step 6: Final answer
   x = 30,704.33