Finding the Fourth Proportional to 8,323.92, 12,485.28 and 3,392.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,323.92 : 12,485.28 = 3,392.16 : x
2. Step 2: Convert to fraction form
   8,323.92/12,485.28 = 3,392.16/x
3. Step 3: Cross multiply
   8,323.92x = 12,485.28 × 3,392.16
4. Step 4: Simplify right side
   8,323.92x = 42,352,067.40
5. Step 5: Solve for x
   x = 42,352,067.40/8,323.92
6. Step 6: Final answer
   x = 5,088.00