Finding the Fourth Proportional to 6,078.21, 8,388.72 and 3,426.45

Step by Step Solution

1. Step 1: Write the proportion equation
   6,078.21 : 8,388.72 = 3,426.45 : x
2. Step 2: Convert to fraction form
   6,078.21/8,388.72 = 3,426.45/x
3. Step 3: Cross multiply
   6,078.21x = 8,388.72 × 3,426.45
4. Step 4: Simplify right side
   6,078.21x = 28,743,529.64
5. Step 5: Solve for x
   x = 28,743,529.64/6,078.21
6. Step 6: Final answer
   x = 4,728.95