Finding the Fourth Proportional to 22,892.43, 31,589.94 and 12,819.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,892.43 : 31,589.94 = 12,819.15 : x
2. Step 2: Convert to fraction form
   22,892.43/31,589.94 = 12,819.15/x
3. Step 3: Cross multiply
   22,892.43x = 31,589.94 × 12,819.15
4. Step 4: Simplify right side
   22,892.43x = 404,956,179.35
5. Step 5: Solve for x
   x = 404,956,179.35/22,892.43
6. Step 6: Final answer
   x = 17,689.52