Finding the Fourth Proportional to 31,622.60, 47,434.72 and 14,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,622.60 : 47,434.72 = 14,978.72 : x
2. Step 2: Convert to fraction form
   31,622.60/47,434.72 = 14,978.72/x
3. Step 3: Cross multiply
   31,622.60x = 47,434.72 × 14,978.72
4. Step 4: Simplify right side
   31,622.60x = 710,511,389.16
5. Step 5: Solve for x
   x = 710,511,389.16/31,622.60
6. Step 6: Final answer
   x = 22,468.47