Finding the Fourth Proportional to 3,607.55, 5,399.98 and 3,523.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,607.55 : 5,399.98 = 3,523.31 : x
2. Step 2: Convert to fraction form
   3,607.55/5,399.98 = 3,523.31/x
3. Step 3: Cross multiply
   3,607.55x = 5,399.98 × 3,523.31
4. Step 4: Simplify right side
   3,607.55x = 19,025,767.73
5. Step 5: Solve for x
   x = 19,025,767.73/3,607.55
6. Step 6: Final answer
   x = 5,273.88