Finding the Fourth Proportional to 6,499.28, 9,770.52 and 5,039.12

Step by Step Solution

1. Step 1: Write the proportion equation
   6,499.28 : 9,770.52 = 5,039.12 : x
2. Step 2: Convert to fraction form
   6,499.28/9,770.52 = 5,039.12/x
3. Step 3: Cross multiply
   6,499.28x = 9,770.52 × 5,039.12
4. Step 4: Simplify right side
   6,499.28x = 49,234,822.74
5. Step 5: Solve for x
   x = 49,234,822.74/6,499.28
6. Step 6: Final answer
   x = 7,575.43