Finding the Fourth Proportional to 3,895.21, 5,863.86 and 3,556.23

Step by Step Solution

1. Step 1: Write the proportion equation
   3,895.21 : 5,863.86 = 3,556.23 : x
2. Step 2: Convert to fraction form
   3,895.21/5,863.86 = 3,556.23/x
3. Step 3: Cross multiply
   3,895.21x = 5,863.86 × 3,556.23
4. Step 4: Simplify right side
   3,895.21x = 20,853,212.86
5. Step 5: Solve for x
   x = 20,853,212.86/3,895.21
6. Step 6: Final answer
   x = 5,353.55