Finding the Fourth Proportional to 12,084.82, 18,133.83 and 4,689.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,084.82 : 18,133.83 = 4,689.57 : x
2. Step 2: Convert to fraction form
   12,084.82/18,133.83 = 4,689.57/x
3. Step 3: Cross multiply
   12,084.82x = 18,133.83 × 4,689.57
4. Step 4: Simplify right side
   12,084.82x = 85,039,797.15
5. Step 5: Solve for x
   x = 85,039,797.15/12,084.82
6. Step 6: Final answer
   x = 7,036.91