Finding the Fourth Proportional to 36,105.36, 54,144.77 and 12,406.18

Step by Step Solution

1. Step 1: Write the proportion equation
   36,105.36 : 54,144.77 = 12,406.18 : x
2. Step 2: Convert to fraction form
   36,105.36/54,144.77 = 12,406.18/x
3. Step 3: Cross multiply
   36,105.36x = 54,144.77 × 12,406.18
4. Step 4: Simplify right side
   36,105.36x = 671,729,736.59
5. Step 5: Solve for x
   x = 671,729,736.59/36,105.36
6. Step 6: Final answer
   x = 18,604.71