Finding the Fourth Proportional to 6,143.96, 8,478.69 and 3,591.86

Step by Step Solution

1. Step 1: Write the proportion equation
   6,143.96 : 8,478.69 = 3,591.86 : x
2. Step 2: Convert to fraction form
   6,143.96/8,478.69 = 3,591.86/x
3. Step 3: Cross multiply
   6,143.96x = 8,478.69 × 3,591.86
4. Step 4: Simplify right side
   6,143.96x = 30,454,267.46
5. Step 5: Solve for x
   x = 30,454,267.46/6,143.96
6. Step 6: Final answer
   x = 4,956.78