Finding the Fourth Proportional to 8,105.43, 11,185.61 and 4,961.62

Step by Step Solution

1. Step 1: Write the proportion equation
   8,105.43 : 11,185.61 = 4,961.62 : x
2. Step 2: Convert to fraction form
   8,105.43/11,185.61 = 4,961.62/x
3. Step 3: Cross multiply
   8,105.43x = 11,185.61 × 4,961.62
4. Step 4: Simplify right side
   8,105.43x = 55,498,746.29
5. Step 5: Solve for x
   x = 55,498,746.29/8,105.43
6. Step 6: Final answer
   x = 6,847.11