Finding the Fourth Proportional to 9,168.38, 12,648.44 and 7,040.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,168.38 : 12,648.44 = 7,040.24 : x
2. Step 2: Convert to fraction form
   9,168.38/12,648.44 = 7,040.24/x
3. Step 3: Cross multiply
   9,168.38x = 12,648.44 × 7,040.24
4. Step 4: Simplify right side
   9,168.38x = 89,048,007.58
5. Step 5: Solve for x
   x = 89,048,007.58/9,168.38
6. Step 6: Final answer
   x = 9,712.52