Finding the Fourth Proportional to 4,479.30, 6,180.57 and 3,061.40

Step by Step Solution

1. Step 1: Write the proportion equation
   4,479.30 : 6,180.57 = 3,061.40 : x
2. Step 2: Convert to fraction form
   4,479.30/6,180.57 = 3,061.40/x
3. Step 3: Cross multiply
   4,479.30x = 6,180.57 × 3,061.40
4. Step 4: Simplify right side
   4,479.30x = 18,921,166.10
5. Step 5: Solve for x
   x = 18,921,166.10/4,479.30
6. Step 6: Final answer
   x = 4,224.13