Finding the Fourth Proportional to 4,196.98, 6,287.27 and 3,218.30

Step by Step Solution

1. Step 1: Write the proportion equation
   4,196.98 : 6,287.27 = 3,218.30 : x
2. Step 2: Convert to fraction form
   4,196.98/6,287.27 = 3,218.30/x
3. Step 3: Cross multiply
   4,196.98x = 6,287.27 × 3,218.30
4. Step 4: Simplify right side
   4,196.98x = 20,234,297.09
5. Step 5: Solve for x
   x = 20,234,297.09/4,196.98
6. Step 6: Final answer
   x = 4,821.15