Finding the Fourth Proportional to 8,610.15, 12,913.41 and 3,928.83

Step by Step Solution

1. Step 1: Write the proportion equation
   8,610.15 : 12,913.41 = 3,928.83 : x
2. Step 2: Convert to fraction form
   8,610.15/12,913.41 = 3,928.83/x
3. Step 3: Cross multiply
   8,610.15x = 12,913.41 × 3,928.83
4. Step 4: Simplify right side
   8,610.15x = 50,734,592.61
5. Step 5: Solve for x
   x = 50,734,592.61/8,610.15
6. Step 6: Final answer
   x = 5,892.42