Finding the Fourth Proportional to 22,890.97, 31,585.88 and 12,819.83

Step by Step Solution

1. Step 1: Write the proportion equation
   22,890.97 : 31,585.88 = 12,819.83 : x
2. Step 2: Convert to fraction form
   22,890.97/31,585.88 = 12,819.83/x
3. Step 3: Cross multiply
   22,890.97x = 31,585.88 × 12,819.83
4. Step 4: Simplify right side
   22,890.97x = 404,925,612.00
5. Step 5: Solve for x
   x = 404,925,612.00/22,890.97
6. Step 6: Final answer
   x = 17,689.32