Finding the Fourth Proportional to 22,912.18, 31,604.52 and 13,478.92

Step by Step Solution

1. Step 1: Write the proportion equation
   22,912.18 : 31,604.52 = 13,478.92 : x
2. Step 2: Convert to fraction form
   22,912.18/31,604.52 = 13,478.92/x
3. Step 3: Cross multiply
   22,912.18x = 31,604.52 × 13,478.92
4. Step 4: Simplify right side
   22,912.18x = 425,994,796.72
5. Step 5: Solve for x
   x = 425,994,796.72/22,912.18
6. Step 6: Final answer
   x = 18,592.50