Finding the Fourth Proportional to 3,969.72, 5,957.94 and 2,216.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,969.72 : 5,957.94 = 2,216.42 : x
2. Step 2: Convert to fraction form
   3,969.72/5,957.94 = 2,216.42/x
3. Step 3: Cross multiply
   3,969.72x = 5,957.94 × 2,216.42
4. Step 4: Simplify right side
   3,969.72x = 13,205,297.37
5. Step 5: Solve for x
   x = 13,205,297.37/3,969.72
6. Step 6: Final answer
   x = 3,326.51