Finding the Fourth Proportional to 5,117.31, 7,061.88 and 2,879.19

Step by Step Solution

1. Step 1: Write the proportion equation
   5,117.31 : 7,061.88 = 2,879.19 : x
2. Step 2: Convert to fraction form
   5,117.31/7,061.88 = 2,879.19/x
3. Step 3: Cross multiply
   5,117.31x = 7,061.88 × 2,879.19
4. Step 4: Simplify right side
   5,117.31x = 20,332,513.34
5. Step 5: Solve for x
   x = 20,332,513.34/5,117.31
6. Step 6: Final answer
   x = 3,973.28