Finding the Fourth Proportional to 31,618.80, 47,451.54 and 14,978.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,618.80 : 47,451.54 = 14,978.82 : x
2. Step 2: Convert to fraction form
   31,618.80/47,451.54 = 14,978.82/x
3. Step 3: Cross multiply
   31,618.80x = 47,451.54 × 14,978.82
4. Step 4: Simplify right side
   31,618.80x = 710,768,076.38
5. Step 5: Solve for x
   x = 710,768,076.38/31,618.80
6. Step 6: Final answer
   x = 22,479.29