Finding the Fourth Proportional to 11,871.50, 16,382.94 and 7,687.04

Step by Step Solution

1. Step 1: Write the proportion equation
   11,871.50 : 16,382.94 = 7,687.04 : x
2. Step 2: Convert to fraction form
   11,871.50/16,382.94 = 7,687.04/x
3. Step 3: Cross multiply
   11,871.50x = 16,382.94 × 7,687.04
4. Step 4: Simplify right side
   11,871.50x = 125,936,315.10
5. Step 5: Solve for x
   x = 125,936,315.10/11,871.50
6. Step 6: Final answer
   x = 10,608.29