Finding the Fourth Proportional to 31,456.14, 47,217.01 and 13,938.27

Step by Step Solution

1. Step 1: Write the proportion equation
   31,456.14 : 47,217.01 = 13,938.27 : x
2. Step 2: Convert to fraction form
   31,456.14/47,217.01 = 13,938.27/x
3. Step 3: Cross multiply
   31,456.14x = 47,217.01 × 13,938.27
4. Step 4: Simplify right side
   31,456.14x = 658,123,433.97
5. Step 5: Solve for x
   x = 658,123,433.97/31,456.14
6. Step 6: Final answer
   x = 20,921.94