Finding the Fourth Proportional to 12,105.83, 18,165.75 and 5,085.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,105.83 : 18,165.75 = 5,085.23 : x
2. Step 2: Convert to fraction form
   12,105.83/18,165.75 = 5,085.23/x
3. Step 3: Cross multiply
   12,105.83x = 18,165.75 × 5,085.23
4. Step 4: Simplify right side
   12,105.83x = 92,377,016.87
5. Step 5: Solve for x
   x = 92,377,016.87/12,105.83
6. Step 6: Final answer
   x = 7,630.79