Finding the Fourth Proportional to 7,443.32, 11,147.37 and 6,464.18

Step by Step Solution

1. Step 1: Write the proportion equation
   7,443.32 : 11,147.37 = 6,464.18 : x
2. Step 2: Convert to fraction form
   7,443.32/11,147.37 = 6,464.18/x
3. Step 3: Cross multiply
   7,443.32x = 11,147.37 × 6,464.18
4. Step 4: Simplify right side
   7,443.32x = 72,058,550.47
5. Step 5: Solve for x
   x = 72,058,550.47/7,443.32
6. Step 6: Final answer
   x = 9,680.98