Finding the Fourth Proportional to 4,145.89, 5,717.39 and 3,200.17

Step by Step Solution

1. Step 1: Write the proportion equation
   4,145.89 : 5,717.39 = 3,200.17 : x
2. Step 2: Convert to fraction form
   4,145.89/5,717.39 = 3,200.17/x
3. Step 3: Cross multiply
   4,145.89x = 5,717.39 × 3,200.17
4. Step 4: Simplify right side
   4,145.89x = 18,296,603.96
5. Step 5: Solve for x
   x = 18,296,603.96/4,145.89
6. Step 6: Final answer
   x = 4,413.19