Finding the Fourth Proportional to 3,965.62, 5,472.38 and 2,196.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,965.62 : 5,472.38 = 2,196.94 : x
2. Step 2: Convert to fraction form
   3,965.62/5,472.38 = 2,196.94/x
3. Step 3: Cross multiply
   3,965.62x = 5,472.38 × 2,196.94
4. Step 4: Simplify right side
   3,965.62x = 12,022,490.52
5. Step 5: Solve for x
   x = 12,022,490.52/3,965.62
6. Step 6: Final answer
   x = 3,031.68