Finding the Fourth Proportional to 12,118.34, 16,718.15 and 7,399.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,118.34 : 16,718.15 = 7,399.88 : x
2. Step 2: Convert to fraction form
   12,118.34/16,718.15 = 7,399.88/x
3. Step 3: Cross multiply
   12,118.34x = 16,718.15 × 7,399.88
4. Step 4: Simplify right side
   12,118.34x = 123,712,183.23
5. Step 5: Solve for x
   x = 123,712,183.23/12,118.34
6. Step 6: Final answer
   x = 10,208.68