Finding the Fourth Proportional to 8,084.88, 11,158.56 and 7,715.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,084.88 : 11,158.56 = 7,715.52 : x
2. Step 2: Convert to fraction form
   8,084.88/11,158.56 = 7,715.52/x
3. Step 3: Cross multiply
   8,084.88x = 11,158.56 × 7,715.52
4. Step 4: Simplify right side
   8,084.88x = 86,094,092.85
5. Step 5: Solve for x
   x = 86,094,092.85/8,084.88
6. Step 6: Final answer
   x = 10,648.78