Finding the Fourth Proportional to 9,648.40, 14,474.88 and 7,681.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,648.40 : 14,474.88 = 7,681.47 : x
2. Step 2: Convert to fraction form
   9,648.40/14,474.88 = 7,681.47/x
3. Step 3: Cross multiply
   9,648.40x = 14,474.88 × 7,681.47
4. Step 4: Simplify right side
   9,648.40x = 111,188,280.59
5. Step 5: Solve for x
   x = 111,188,280.59/9,648.40
6. Step 6: Final answer
   x = 11,524.01