Finding the Fourth Proportional to 5,419.12, 7,478.34 and 3,061.27

Step by Step Solution

1. Step 1: Write the proportion equation
   5,419.12 : 7,478.34 = 3,061.27 : x
2. Step 2: Convert to fraction form
   5,419.12/7,478.34 = 3,061.27/x
3. Step 3: Cross multiply
   5,419.12x = 7,478.34 × 3,061.27
4. Step 4: Simplify right side
   5,419.12x = 22,893,217.89
5. Step 5: Solve for x
   x = 22,893,217.89/5,419.12
6. Step 6: Final answer
   x = 4,224.53