Finding the Fourth Proportional to 12,018.65, 18,028.37 and 3,253.77

Step by Step Solution

1. Step 1: Write the proportion equation
   12,018.65 : 18,028.37 = 3,253.77 : x
2. Step 2: Convert to fraction form
   12,018.65/18,028.37 = 3,253.77/x
3. Step 3: Cross multiply
   12,018.65x = 18,028.37 × 3,253.77
4. Step 4: Simplify right side
   12,018.65x = 58,660,177.59
5. Step 5: Solve for x
   x = 58,660,177.59/12,018.65
6. Step 6: Final answer
   x = 4,880.76