Finding the Fourth Proportional to 4,118.16, 5,679.27 and 3,644.31

Step by Step Solution

1. Step 1: Write the proportion equation
   4,118.16 : 5,679.27 = 3,644.31 : x
2. Step 2: Convert to fraction form
   4,118.16/5,679.27 = 3,644.31/x
3. Step 3: Cross multiply
   4,118.16x = 5,679.27 × 3,644.31
4. Step 4: Simplify right side
   4,118.16x = 20,697,020.45
5. Step 5: Solve for x
   x = 20,697,020.45/4,118.16
6. Step 6: Final answer
   x = 5,025.79