Finding the Fourth Proportional to 6,563.12, 9,056.88 and 3,909.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,563.12 : 9,056.88 = 3,909.15 : x
2. Step 2: Convert to fraction form
   6,563.12/9,056.88 = 3,909.15/x
3. Step 3: Cross multiply
   6,563.12x = 9,056.88 × 3,909.15
4. Step 4: Simplify right side
   6,563.12x = 35,404,702.45
5. Step 5: Solve for x
   x = 35,404,702.45/6,563.12
6. Step 6: Final answer
   x = 5,394.50