Finding the Fourth Proportional to 5,117.81, 7,062.50 and 2,879.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,117.81 : 7,062.50 = 2,879.69 : x
2. Step 2: Convert to fraction form
   5,117.81/7,062.50 = 2,879.69/x
3. Step 3: Cross multiply
   5,117.81x = 7,062.50 × 2,879.69
4. Step 4: Simplify right side
   5,117.81x = 20,337,766.31
5. Step 5: Solve for x
   x = 20,337,766.31/5,117.81
6. Step 6: Final answer
   x = 3,973.92