Finding the Fourth Proportional to 23,057.75, 31,816.29 and 12,984.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,057.75 : 31,816.29 = 12,984.18 : x
2. Step 2: Convert to fraction form
   23,057.75/31,816.29 = 12,984.18/x
3. Step 3: Cross multiply
   23,057.75x = 31,816.29 × 12,984.18
4. Step 4: Simplify right side
   23,057.75x = 413,108,436.29
5. Step 5: Solve for x
   x = 413,108,436.29/23,057.75
6. Step 6: Final answer
   x = 17,916.25