Finding the Fourth Proportional to 8,904.28, 12,287.40 and 4,925.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,904.28 : 12,287.40 = 4,925.15 : x
2. Step 2: Convert to fraction form
   8,904.28/12,287.40 = 4,925.15/x
3. Step 3: Cross multiply
   8,904.28x = 12,287.40 × 4,925.15
4. Step 4: Simplify right side
   8,904.28x = 60,517,323.40
5. Step 5: Solve for x
   x = 60,517,323.40/8,904.28
6. Step 6: Final answer
   x = 6,796.43