Finding the Fourth Proportional to 4,155.62, 5,740.22 and 3,081.07

Step by Step Solution

1. Step 1: Write the proportion equation
   4,155.62 : 5,740.22 = 3,081.07 : x
2. Step 2: Convert to fraction form
   4,155.62/5,740.22 = 3,081.07/x
3. Step 3: Cross multiply
   4,155.62x = 5,740.22 × 3,081.07
4. Step 4: Simplify right side
   4,155.62x = 17,685,984.89
5. Step 5: Solve for x
   x = 17,685,984.89/4,155.62
6. Step 6: Final answer
   x = 4,255.92