Finding the Fourth Proportional to 6,105.48, 8,427.18 and 4,217.40

Step by Step Solution

1. Step 1: Write the proportion equation
   6,105.48 : 8,427.18 = 4,217.40 : x
2. Step 2: Convert to fraction form
   6,105.48/8,427.18 = 4,217.40/x
3. Step 3: Cross multiply
   6,105.48x = 8,427.18 × 4,217.40
4. Step 4: Simplify right side
   6,105.48x = 35,540,788.93
5. Step 5: Solve for x
   x = 35,540,788.93/6,105.48
6. Step 6: Final answer
   x = 5,821.13