Finding the Fourth Proportional to 6,216.47, 8,579.88 and 3,563.90

Step by Step Solution

1. Step 1: Write the proportion equation
   6,216.47 : 8,579.88 = 3,563.90 : x
2. Step 2: Convert to fraction form
   6,216.47/8,579.88 = 3,563.90/x
3. Step 3: Cross multiply
   6,216.47x = 8,579.88 × 3,563.90
4. Step 4: Simplify right side
   6,216.47x = 30,577,834.33
5. Step 5: Solve for x
   x = 30,577,834.33/6,216.47
6. Step 6: Final answer
   x = 4,918.84