Finding the Fourth Proportional to 3,965.28, 5,474.82 and 3,544.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,965.28 : 5,474.82 = 3,544.35 : x
2. Step 2: Convert to fraction form
   3,965.28/5,474.82 = 3,544.35/x
3. Step 3: Cross multiply
   3,965.28x = 5,474.82 × 3,544.35
4. Step 4: Simplify right side
   3,965.28x = 19,404,678.27
5. Step 5: Solve for x
   x = 19,404,678.27/3,965.28
6. Step 6: Final answer
   x = 4,893.65