Finding the Fourth Proportional to 6,216.24, 8,577.45 and 3,980.10

Step by Step Solution

1. Step 1: Write the proportion equation
   6,216.24 : 8,577.45 = 3,980.10 : x
2. Step 2: Convert to fraction form
   6,216.24/8,577.45 = 3,980.10/x
3. Step 3: Cross multiply
   6,216.24x = 8,577.45 × 3,980.10
4. Step 4: Simplify right side
   6,216.24x = 34,139,108.75
5. Step 5: Solve for x
   x = 34,139,108.75/6,216.24
6. Step 6: Final answer
   x = 5,491.92