Finding the Fourth Proportional to 9,016.88, 12,443.40 and 5,240.36

Step by Step Solution

1. Step 1: Write the proportion equation
   9,016.88 : 12,443.40 = 5,240.36 : x
2. Step 2: Convert to fraction form
   9,016.88/12,443.40 = 5,240.36/x
3. Step 3: Cross multiply
   9,016.88x = 12,443.40 × 5,240.36
4. Step 4: Simplify right side
   9,016.88x = 65,207,895.62
5. Step 5: Solve for x
   x = 65,207,895.62/9,016.88
6. Step 6: Final answer
   x = 7,231.76