Finding the Fourth Proportional to 12,151.91, 18,227.61 and 3,386.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,151.91 : 18,227.61 = 3,386.60 : x
2. Step 2: Convert to fraction form
   12,151.91/18,227.61 = 3,386.60/x
3. Step 3: Cross multiply
   12,151.91x = 18,227.61 × 3,386.60
4. Step 4: Simplify right side
   12,151.91x = 61,729,624.03
5. Step 5: Solve for x
   x = 61,729,624.03/12,151.91
6. Step 6: Final answer
   x = 5,079.83