Finding the Fourth Proportional to 9,233.20, 12,751.32 and 7,116.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,233.20 : 12,751.32 = 7,116.40 : x
2. Step 2: Convert to fraction form
   9,233.20/12,751.32 = 7,116.40/x
3. Step 3: Cross multiply
   9,233.20x = 12,751.32 × 7,116.40
4. Step 4: Simplify right side
   9,233.20x = 90,743,493.65
5. Step 5: Solve for x
   x = 90,743,493.65/9,233.20
6. Step 6: Final answer
   x = 9,827.96