Finding the Fourth Proportional to 22,887.54, 31,585.10 and 12,816.86

Step by Step Solution

1. Step 1: Write the proportion equation
   22,887.54 : 31,585.10 = 12,816.86 : x
2. Step 2: Convert to fraction form
   22,887.54/31,585.10 = 12,816.86/x
3. Step 3: Cross multiply
   22,887.54x = 31,585.10 × 12,816.86
4. Step 4: Simplify right side
   22,887.54x = 404,821,582.78
5. Step 5: Solve for x
   x = 404,821,582.78/22,887.54
6. Step 6: Final answer
   x = 17,687.42