Finding the Fourth Proportional to 6,411.92, 9,616.32 and 3,290.28

Step by Step Solution

1. Step 1: Write the proportion equation
   6,411.92 : 9,616.32 = 3,290.28 : x
2. Step 2: Convert to fraction form
   6,411.92/9,616.32 = 3,290.28/x
3. Step 3: Cross multiply
   6,411.92x = 9,616.32 × 3,290.28
4. Step 4: Simplify right side
   6,411.92x = 31,640,385.37
5. Step 5: Solve for x
   x = 31,640,385.37/6,411.92
6. Step 6: Final answer
   x = 4,934.62