Finding the Fourth Proportional to 12,086.67, 18,112.73 and 6,881.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,086.67 : 18,112.73 = 6,881.79 : x
2. Step 2: Convert to fraction form
   12,086.67/18,112.73 = 6,881.79/x
3. Step 3: Cross multiply
   12,086.67x = 18,112.73 × 6,881.79
4. Step 4: Simplify right side
   12,086.67x = 124,647,969.78
5. Step 5: Solve for x
   x = 124,647,969.78/12,086.67
6. Step 6: Final answer
   x = 10,312.85