Finding the Fourth Proportional to 5,214.88, 7,196.72 and 2,857.08

Step by Step Solution

1. Step 1: Write the proportion equation
   5,214.88 : 7,196.72 = 2,857.08 : x
2. Step 2: Convert to fraction form
   5,214.88/7,196.72 = 2,857.08/x
3. Step 3: Cross multiply
   5,214.88x = 7,196.72 × 2,857.08
4. Step 4: Simplify right side
   5,214.88x = 20,561,604.78
5. Step 5: Solve for x
   x = 20,561,604.78/5,214.88
6. Step 6: Final answer
   x = 3,942.87