Finding the Fourth Proportional to 3,658.98, 5,048.28 and 2,167.23

Step by Step Solution

1. Step 1: Write the proportion equation
   3,658.98 : 5,048.28 = 2,167.23 : x
2. Step 2: Convert to fraction form
   3,658.98/5,048.28 = 2,167.23/x
3. Step 3: Cross multiply
   3,658.98x = 5,048.28 × 2,167.23
4. Step 4: Simplify right side
   3,658.98x = 10,940,783.86
5. Step 5: Solve for x
   x = 10,940,783.86/3,658.98
6. Step 6: Final answer
   x = 2,990.12