Finding the Fourth Proportional to 22,887.37, 31,585.17 and 12,815.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,887.37 : 31,585.17 = 12,815.80 : x
2. Step 2: Convert to fraction form
   22,887.37/31,585.17 = 12,815.80/x
3. Step 3: Cross multiply
   22,887.37x = 31,585.17 × 12,815.80
4. Step 4: Simplify right side
   22,887.37x = 404,789,221.69
5. Step 5: Solve for x
   x = 404,789,221.69/22,887.37
6. Step 6: Final answer
   x = 17,686.14