Finding the Fourth Proportional to 12,083.67, 18,132.81 and 4,291.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,083.67 : 18,132.81 = 4,291.89 : x
2. Step 2: Convert to fraction form
   12,083.67/18,132.81 = 4,291.89/x
3. Step 3: Cross multiply
   12,083.67x = 18,132.81 × 4,291.89
4. Step 4: Simplify right side
   12,083.67x = 77,824,025.91
5. Step 5: Solve for x
   x = 77,824,025.91/12,083.67
6. Step 6: Final answer
   x = 6,440.43