Finding the Fourth Proportional to 3,965.50, 5,949.96 and 2,116.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,965.50 : 5,949.96 = 2,116.09 : x
2. Step 2: Convert to fraction form
   3,965.50/5,949.96 = 2,116.09/x
3. Step 3: Cross multiply
   3,965.50x = 5,949.96 × 2,116.09
4. Step 4: Simplify right side
   3,965.50x = 12,590,650.86
5. Step 5: Solve for x
   x = 12,590,650.86/3,965.50
6. Step 6: Final answer
   x = 3,175.05