Finding the Fourth Proportional to 22,132.86, 30,542.38 and 12,572.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,132.86 : 30,542.38 = 12,572.72 : x
2. Step 2: Convert to fraction form
   22,132.86/30,542.38 = 12,572.72/x
3. Step 3: Cross multiply
   22,132.86x = 30,542.38 × 12,572.72
4. Step 4: Simplify right side
   22,132.86x = 384,000,791.87
5. Step 5: Solve for x
   x = 384,000,791.87/22,132.86
6. Step 6: Final answer
   x = 17,349.80