Finding the Fourth Proportional to 5,074.13, 7,002.90 and 2,978.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,074.13 : 7,002.90 = 2,978.25 : x
2. Step 2: Convert to fraction form
   5,074.13/7,002.90 = 2,978.25/x
3. Step 3: Cross multiply
   5,074.13x = 7,002.90 × 2,978.25
4. Step 4: Simplify right side
   5,074.13x = 20,856,386.93
5. Step 5: Solve for x
   x = 20,856,386.93/5,074.13
6. Step 6: Final answer
   x = 4,110.34