Finding the Fourth Proportional to 11,872.52, 16,376.94 and 7,839.38

Step by Step Solution

1. Step 1: Write the proportion equation
   11,872.52 : 16,376.94 = 7,839.38 : x
2. Step 2: Convert to fraction form
   11,872.52/16,376.94 = 7,839.38/x
3. Step 3: Cross multiply
   11,872.52x = 16,376.94 × 7,839.38
4. Step 4: Simplify right side
   11,872.52x = 128,385,097.71
5. Step 5: Solve for x
   x = 128,385,097.71/11,872.52
6. Step 6: Final answer
   x = 10,813.63