Finding the Fourth Proportional to 22,470.90, 31,016.01 and 13,042.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,470.90 : 31,016.01 = 13,042.50 : x
2. Step 2: Convert to fraction form
   22,470.90/31,016.01 = 13,042.50/x
3. Step 3: Cross multiply
   22,470.90x = 31,016.01 × 13,042.50
4. Step 4: Simplify right side
   22,470.90x = 404,526,310.43
5. Step 5: Solve for x
   x = 404,526,310.43/22,470.90
6. Step 6: Final answer
   x = 18,002.23