Finding the Fourth Proportional to 4,081.24, 5,631.78 and 3,019.60

Step by Step Solution

1. Step 1: Write the proportion equation
   4,081.24 : 5,631.78 = 3,019.60 : x
2. Step 2: Convert to fraction form
   4,081.24/5,631.78 = 3,019.60/x
3. Step 3: Cross multiply
   4,081.24x = 5,631.78 × 3,019.60
4. Step 4: Simplify right side
   4,081.24x = 17,005,722.89
5. Step 5: Solve for x
   x = 17,005,722.89/4,081.24
6. Step 6: Final answer
   x = 4,166.80