Finding the Fourth Proportional to 31,632.20, 47,432.28 and 10,564.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,632.20 : 47,432.28 = 10,564.72 : x
2. Step 2: Convert to fraction form
   31,632.20/47,432.28 = 10,564.72/x
3. Step 3: Cross multiply
   31,632.20x = 47,432.28 × 10,564.72
4. Step 4: Simplify right side
   31,632.20x = 501,108,757.16
5. Step 5: Solve for x
   x = 501,108,757.16/31,632.20
6. Step 6: Final answer
   x = 15,841.73