Finding the Fourth Proportional to 3,686.40, 5,500.80 and 3,598.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,686.40 : 5,500.80 = 3,598.56 : x
2. Step 2: Convert to fraction form
   3,686.40/5,500.80 = 3,598.56/x
3. Step 3: Cross multiply
   3,686.40x = 5,500.80 × 3,598.56
4. Step 4: Simplify right side
   3,686.40x = 19,794,958.85
5. Step 5: Solve for x
   x = 19,794,958.85/3,686.40
6. Step 6: Final answer
   x = 5,369.73