Finding the Fourth Proportional to 10,978.37, 15,150.38 and 6,500.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.37 : 15,150.38 = 6,500.49 : x
2. Step 2: Convert to fraction form
   10,978.37/15,150.38 = 6,500.49/x
3. Step 3: Cross multiply
   10,978.37x = 15,150.38 × 6,500.49
4. Step 4: Simplify right side
   10,978.37x = 98,484,861.18
5. Step 5: Solve for x
   x = 98,484,861.18/10,978.37
6. Step 6: Final answer
   x = 8,970.81