Finding the Fourth Proportional to 5,419.45, 7,478.80 and 3,061.59

Step by Step Solution

1. Step 1: Write the proportion equation
   5,419.45 : 7,478.80 = 3,061.59 : x
2. Step 2: Convert to fraction form
   5,419.45/7,478.80 = 3,061.59/x
3. Step 3: Cross multiply
   5,419.45x = 7,478.80 × 3,061.59
4. Step 4: Simplify right side
   5,419.45x = 22,897,019.29
5. Step 5: Solve for x
   x = 22,897,019.29/5,419.45
6. Step 6: Final answer
   x = 4,224.97