Finding the Fourth Proportional to 9,648.28, 13,325.52 and 6,499

Step by Step Solution

1. Step 1: Write the proportion equation
   9,648.28 : 13,325.52 = 6,499 : x
2. Step 2: Convert to fraction form
   9,648.28/13,325.52 = 6,499/x
3. Step 3: Cross multiply
   9,648.28x = 13,325.52 × 6,499
4. Step 4: Simplify right side
   9,648.28x = 86,602,554.48
5. Step 5: Solve for x
   x = 86,602,554.48/9,648.28
6. Step 6: Final answer
   x = 8,975.96