Finding the Fourth Proportional to 12,086.62, 18,112.71 and 9,441.97

Step by Step Solution

1. Step 1: Write the proportion equation
   12,086.62 : 18,112.71 = 9,441.97 : x
2. Step 2: Convert to fraction form
   12,086.62/18,112.71 = 9,441.97/x
3. Step 3: Cross multiply
   12,086.62x = 18,112.71 × 9,441.97
4. Step 4: Simplify right side
   12,086.62x = 171,019,654.56
5. Step 5: Solve for x
   x = 171,019,654.56/12,086.62
6. Step 6: Final answer
   x = 14,149.50