Finding the Fourth Proportional to 8,105.25, 12,161.93 and 3,725.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,105.25 : 12,161.93 = 3,725.78 : x
2. Step 2: Convert to fraction form
   8,105.25/12,161.93 = 3,725.78/x
3. Step 3: Cross multiply
   8,105.25x = 12,161.93 × 3,725.78
4. Step 4: Simplify right side
   8,105.25x = 45,312,596.12
5. Step 5: Solve for x
   x = 45,312,596.12/8,105.25
6. Step 6: Final answer
   x = 5,590.52