Finding the Fourth Proportional to 4,449.57, 6,142.41 and 3,196.91

Step by Step Solution

1. Step 1: Write the proportion equation
   4,449.57 : 6,142.41 = 3,196.91 : x
2. Step 2: Convert to fraction form
   4,449.57/6,142.41 = 3,196.91/x
3. Step 3: Cross multiply
   4,449.57x = 6,142.41 × 3,196.91
4. Step 4: Simplify right side
   4,449.57x = 19,636,701.24
5. Step 5: Solve for x
   x = 19,636,701.24/4,449.57
6. Step 6: Final answer
   x = 4,413.17