Finding the Fourth Proportional to 6,091.86, 8,406.70 and 3,439.38

Step by Step Solution

1. Step 1: Write the proportion equation
   6,091.86 : 8,406.70 = 3,439.38 : x
2. Step 2: Convert to fraction form
   6,091.86/8,406.70 = 3,439.38/x
3. Step 3: Cross multiply
   6,091.86x = 8,406.70 × 3,439.38
4. Step 4: Simplify right side
   6,091.86x = 28,913,871.67
5. Step 5: Solve for x
   x = 28,913,871.67/6,091.86
6. Step 6: Final answer
   x = 4,746.31