Finding the Fourth Proportional to 3,965.81, 5,472.48 and 3,544.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,965.81 : 5,472.48 = 3,544.82 : x
2. Step 2: Convert to fraction form
   3,965.81/5,472.48 = 3,544.82/x
3. Step 3: Cross multiply
   3,965.81x = 5,472.48 × 3,544.82
4. Step 4: Simplify right side
   3,965.81x = 19,398,956.55
5. Step 5: Solve for x
   x = 19,398,956.55/3,965.81
6. Step 6: Final answer
   x = 4,891.55