Finding the Fourth Proportional to 6,105.17, 8,421.50 and 3,863.16

Step by Step Solution

1. Step 1: Write the proportion equation
   6,105.17 : 8,421.50 = 3,863.16 : x
2. Step 2: Convert to fraction form
   6,105.17/8,421.50 = 3,863.16/x
3. Step 3: Cross multiply
   6,105.17x = 8,421.50 × 3,863.16
4. Step 4: Simplify right side
   6,105.17x = 32,533,582.62
5. Step 5: Solve for x
   x = 32,533,582.62/6,105.17
6. Step 6: Final answer
   x = 5,328.86