Finding the Fourth Proportional to 5,419.59, 7,479.18 and 3,061.74

Step by Step Solution

1. Step 1: Write the proportion equation
   5,419.59 : 7,479.18 = 3,061.74 : x
2. Step 2: Convert to fraction form
   5,419.59/7,479.18 = 3,061.74/x
3. Step 3: Cross multiply
   5,419.59x = 7,479.18 × 3,061.74
4. Step 4: Simplify right side
   5,419.59x = 22,899,304.57
5. Step 5: Solve for x
   x = 22,899,304.57/5,419.59
6. Step 6: Final answer
   x = 4,225.28