Finding the Fourth Proportional to 4,976.72, 6,868.05 and 2,986.89

Step by Step Solution

1. Step 1: Write the proportion equation
   4,976.72 : 6,868.05 = 2,986.89 : x
2. Step 2: Convert to fraction form
   4,976.72/6,868.05 = 2,986.89/x
3. Step 3: Cross multiply
   4,976.72x = 6,868.05 × 2,986.89
4. Step 4: Simplify right side
   4,976.72x = 20,514,109.86
5. Step 5: Solve for x
   x = 20,514,109.86/4,976.72
6. Step 6: Final answer
   x = 4,122.01