Finding the Fourth Proportional to 12,144.52, 18,216.80 and 3,936.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,144.52 : 18,216.80 = 3,936.52 : x
2. Step 2: Convert to fraction form
   12,144.52/18,216.80 = 3,936.52/x
3. Step 3: Cross multiply
   12,144.52x = 18,216.80 × 3,936.52
4. Step 4: Simplify right side
   12,144.52x = 71,710,797.54
5. Step 5: Solve for x
   x = 71,710,797.54/12,144.52
6. Step 6: Final answer
   x = 5,904.79