Finding the Fourth Proportional to 3,196.24, 4,413.21 and 3,145.21

Step by Step Solution

1. Step 1: Write the proportion equation
   3,196.24 : 4,413.21 = 3,145.21 : x
2. Step 2: Convert to fraction form
   3,196.24/4,413.21 = 3,145.21/x
3. Step 3: Cross multiply
   3,196.24x = 4,413.21 × 3,145.21
4. Step 4: Simplify right side
   3,196.24x = 13,880,472.22
5. Step 5: Solve for x
   x = 13,880,472.22/3,196.24
6. Step 6: Final answer
   x = 4,342.75