Finding the Fourth Proportional to 7,715.52, 10,647.72 and 5,060.88

Step by Step Solution

1. Step 1: Write the proportion equation
   7,715.52 : 10,647.72 = 5,060.88 : x
2. Step 2: Convert to fraction form
   7,715.52/10,647.72 = 5,060.88/x
3. Step 3: Cross multiply
   7,715.52x = 10,647.72 × 5,060.88
4. Step 4: Simplify right side
   7,715.52x = 53,886,833.19
5. Step 5: Solve for x
   x = 53,886,833.19/7,715.52
6. Step 6: Final answer
   x = 6,984.21