Finding the Fourth Proportional to 12,049.94, 16,620.98 and 8,687.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,049.94 : 16,620.98 = 8,687.18 : x
2. Step 2: Convert to fraction form
   12,049.94/16,620.98 = 8,687.18/x
3. Step 3: Cross multiply
   12,049.94x = 16,620.98 × 8,687.18
4. Step 4: Simplify right side
   12,049.94x = 144,389,445.04
5. Step 5: Solve for x
   x = 144,389,445.04/12,049.94
6. Step 6: Final answer
   x = 11,982.59