Finding the Fourth Proportional to 6,078.72, 8,391.96 and 4,659.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,078.72 : 8,391.96 = 4,659.72 : x
2. Step 2: Convert to fraction form
   6,078.72/8,391.96 = 4,659.72/x
3. Step 3: Cross multiply
   6,078.72x = 8,391.96 × 4,659.72
4. Step 4: Simplify right side
   6,078.72x = 39,104,183.85
5. Step 5: Solve for x
   x = 39,104,183.85/6,078.72
6. Step 6: Final answer
   x = 6,432.96