Finding the Fourth Proportional to 12,456.96, 18,693.12 and 8,087.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,456.96 : 18,693.12 = 8,087.04 : x
2. Step 2: Convert to fraction form
   12,456.96/18,693.12 = 8,087.04/x
3. Step 3: Cross multiply
   12,456.96x = 18,693.12 × 8,087.04
4. Step 4: Simplify right side
   12,456.96x = 151,172,009.16
5. Step 5: Solve for x
   x = 151,172,009.16/12,456.96
6. Step 6: Final answer
   x = 12,135.55