Finding the Fourth Proportional to 9,003.92, 12,437.40 and 7,242.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,003.92 : 12,437.40 = 7,242.16 : x
2. Step 2: Convert to fraction form
   9,003.92/12,437.40 = 7,242.16/x
3. Step 3: Cross multiply
   9,003.92x = 12,437.40 × 7,242.16
4. Step 4: Simplify right side
   9,003.92x = 90,073,640.78
5. Step 5: Solve for x
   x = 90,073,640.78/9,003.92
6. Step 6: Final answer
   x = 10,003.83