Finding the Fourth Proportional to 22,887.10, 31,587.24 and 12,816.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,887.10 : 31,587.24 = 12,816.10 : x
2. Step 2: Convert to fraction form
   22,887.10/31,587.24 = 12,816.10/x
3. Step 3: Cross multiply
   22,887.10x = 31,587.24 × 12,816.10
4. Step 4: Simplify right side
   22,887.10x = 404,825,226.56
5. Step 5: Solve for x
   x = 404,825,226.56/22,887.10
6. Step 6: Final answer
   x = 17,687.92