Finding the Fourth Proportional to 3,933.26, 5,392.72 and 3,863.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,933.26 : 5,392.72 = 3,863.06 : x
2. Step 2: Convert to fraction form
   3,933.26/5,392.72 = 3,863.06/x
3. Step 3: Cross multiply
   3,933.26x = 5,392.72 × 3,863.06
4. Step 4: Simplify right side
   3,933.26x = 20,832,400.92
5. Step 5: Solve for x
   x = 20,832,400.92/3,933.26
6. Step 6: Final answer
   x = 5,296.47