Finding the Fourth Proportional to 3,728.67, 5,603.60 and 3,590.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,728.67 : 5,603.60 = 3,590.61 : x
2. Step 2: Convert to fraction form
   3,728.67/5,603.60 = 3,590.61/x
3. Step 3: Cross multiply
   3,728.67x = 5,603.60 × 3,590.61
4. Step 4: Simplify right side
   3,728.67x = 20,120,342.20
5. Step 5: Solve for x
   x = 20,120,342.20/3,728.67
6. Step 6: Final answer
   x = 5,396.12