Finding the Fourth Proportional to 3,945.38, 5,433.55 and 3,859.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,945.38 : 5,433.55 = 3,859.27 : x
2. Step 2: Convert to fraction form
   3,945.38/5,433.55 = 3,859.27/x
3. Step 3: Cross multiply
   3,945.38x = 5,433.55 × 3,859.27
4. Step 4: Simplify right side
   3,945.38x = 20,969,536.51
5. Step 5: Solve for x
   x = 20,969,536.51/3,945.38
6. Step 6: Final answer
   x = 5,314.96