Finding the Fourth Proportional to 10,978.43, 15,150.53 and 6,503.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.43 : 15,150.53 = 6,503.18 : x
2. Step 2: Convert to fraction form
   10,978.43/15,150.53 = 6,503.18/x
3. Step 3: Cross multiply
   10,978.43x = 15,150.53 × 6,503.18
4. Step 4: Simplify right side
   10,978.43x = 98,526,591.17
5. Step 5: Solve for x
   x = 98,526,591.17/10,978.43
6. Step 6: Final answer
   x = 8,974.56