Finding the Fourth Proportional to 6,106.80, 8,426.72 and 3,454.40

Step by Step Solution

1. Step 1: Write the proportion equation
   6,106.80 : 8,426.72 = 3,454.40 : x
2. Step 2: Convert to fraction form
   6,106.80/8,426.72 = 3,454.40/x
3. Step 3: Cross multiply
   6,106.80x = 8,426.72 × 3,454.40
4. Step 4: Simplify right side
   6,106.80x = 29,109,261.57
5. Step 5: Solve for x
   x = 29,109,261.57/6,106.80
6. Step 6: Final answer
   x = 4,766.70