Finding the Fourth Proportional to 6,078.88, 8,388.42 and 3,426.64

Step by Step Solution

1. Step 1: Write the proportion equation
   6,078.88 : 8,388.42 = 3,426.64 : x
2. Step 2: Convert to fraction form
   6,078.88/8,388.42 = 3,426.64/x
3. Step 3: Cross multiply
   6,078.88x = 8,388.42 × 3,426.64
4. Step 4: Simplify right side
   6,078.88x = 28,744,095.51
5. Step 5: Solve for x
   x = 28,744,095.51/6,078.88
6. Step 6: Final answer
   x = 4,728.52