Finding the Fourth Proportional to 10,978.15, 15,147.72 and 6,502.77

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.15 : 15,147.72 = 6,502.77 : x
2. Step 2: Convert to fraction form
   10,978.15/15,147.72 = 6,502.77/x
3. Step 3: Cross multiply
   10,978.15x = 15,147.72 × 6,502.77
4. Step 4: Simplify right side
   10,978.15x = 98,502,139.18
5. Step 5: Solve for x
   x = 98,502,139.18/10,978.15
6. Step 6: Final answer
   x = 8,972.56