Finding the Fourth Proportional to 5,074.54, 7,002.39 and 2,978.26

Step by Step Solution

1. Step 1: Write the proportion equation
   5,074.54 : 7,002.39 = 2,978.26 : x
2. Step 2: Convert to fraction form
   5,074.54/7,002.39 = 2,978.26/x
3. Step 3: Cross multiply
   5,074.54x = 7,002.39 × 2,978.26
4. Step 4: Simplify right side
   5,074.54x = 20,854,938.04
5. Step 5: Solve for x
   x = 20,854,938.04/5,074.54
6. Step 6: Final answer
   x = 4,109.72