Finding the Fourth Proportional to 5,174.27, 7,140.53 and 2,816.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,174.27 : 7,140.53 = 2,816.42 : x
2. Step 2: Convert to fraction form
   5,174.27/7,140.53 = 2,816.42/x
3. Step 3: Cross multiply
   5,174.27x = 7,140.53 × 2,816.42
4. Step 4: Simplify right side
   5,174.27x = 20,110,681.72
5. Step 5: Solve for x
   x = 20,110,681.72/5,174.27
6. Step 6: Final answer
   x = 3,886.67