Finding the Fourth Proportional to 12,146.91, 18,220.35 and 3,382.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,146.91 : 18,220.35 = 3,382.05 : x
2. Step 2: Convert to fraction form
   12,146.91/18,220.35 = 3,382.05/x
3. Step 3: Cross multiply
   12,146.91x = 18,220.35 × 3,382.05
4. Step 4: Simplify right side
   12,146.91x = 61,622,134.72
5. Step 5: Solve for x
   x = 61,622,134.72/12,146.91
6. Step 6: Final answer
   x = 5,073.07