Finding the Fourth Proportional to 22,080.31, 30,470.17 and 12,521.11

Step by Step Solution

1. Step 1: Write the proportion equation
   22,080.31 : 30,470.17 = 12,521.11 : x
2. Step 2: Convert to fraction form
   22,080.31/30,470.17 = 12,521.11/x
3. Step 3: Cross multiply
   22,080.31x = 30,470.17 × 12,521.11
4. Step 4: Simplify right side
   22,080.31x = 381,520,350.29
5. Step 5: Solve for x
   x = 381,520,350.29/22,080.31
6. Step 6: Final answer
   x = 17,278.76