Finding the Fourth Proportional to 5,174.01, 7,140.15 and 2,816.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,174.01 : 7,140.15 = 2,816.15 : x
2. Step 2: Convert to fraction form
   5,174.01/7,140.15 = 2,816.15/x
3. Step 3: Cross multiply
   5,174.01x = 7,140.15 × 2,816.15
4. Step 4: Simplify right side
   5,174.01x = 20,107,697.72
5. Step 5: Solve for x
   x = 20,107,697.72/5,174.01
6. Step 6: Final answer
   x = 3,886.29