Finding the Fourth Proportional to 3,745.59, 5,585.35 and 3,561.64

Step by Step Solution

1. Step 1: Write the proportion equation
   3,745.59 : 5,585.35 = 3,561.64 : x
2. Step 2: Convert to fraction form
   3,745.59/5,585.35 = 3,561.64/x
3. Step 3: Cross multiply
   3,745.59x = 5,585.35 × 3,561.64
4. Step 4: Simplify right side
   3,745.59x = 19,893,005.97
5. Step 5: Solve for x
   x = 19,893,005.97/3,745.59
6. Step 6: Final answer
   x = 5,311.05