Finding the Fourth Proportional to 5,176.88, 7,144.15 and 2,819.02

Step by Step Solution

1. Step 1: Write the proportion equation
   5,176.88 : 7,144.15 = 2,819.02 : x
2. Step 2: Convert to fraction form
   5,176.88/7,144.15 = 2,819.02/x
3. Step 3: Cross multiply
   5,176.88x = 7,144.15 × 2,819.02
4. Step 4: Simplify right side
   5,176.88x = 20,139,501.73
5. Step 5: Solve for x
   x = 20,139,501.73/5,176.88
6. Step 6: Final answer
   x = 3,890.28