Finding the Fourth Proportional to 22,887.49, 31,586.62 and 12,816.86

Step by Step Solution

1. Step 1: Write the proportion equation
   22,887.49 : 31,586.62 = 12,816.86 : x
2. Step 2: Convert to fraction form
   22,887.49/31,586.62 = 12,816.86/x
3. Step 3: Cross multiply
   22,887.49x = 31,586.62 × 12,816.86
4. Step 4: Simplify right side
   22,887.49x = 404,841,333.34
5. Step 5: Solve for x
   x = 404,841,333.34/22,887.49
6. Step 6: Final answer
   x = 17,688.33