Finding the Fourth Proportional to 12,086.18, 16,680.76 and 7,373.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,086.18 : 16,680.76 = 7,373.20 : x
2. Step 2: Convert to fraction form
   12,086.18/16,680.76 = 7,373.20/x
3. Step 3: Cross multiply
   12,086.18x = 16,680.76 × 7,373.20
4. Step 4: Simplify right side
   12,086.18x = 122,990,579.63
5. Step 5: Solve for x
   x = 122,990,579.63/12,086.18
6. Step 6: Final answer
   x = 10,176.13