Finding the Fourth Proportional to 33,186.98, 49,785.16 and 12,408.50

Step by Step Solution

1. Step 1: Write the proportion equation
   33,186.98 : 49,785.16 = 12,408.50 : x
2. Step 2: Convert to fraction form
   33,186.98/49,785.16 = 12,408.50/x
3. Step 3: Cross multiply
   33,186.98x = 49,785.16 × 12,408.50
4. Step 4: Simplify right side
   33,186.98x = 617,759,157.86
5. Step 5: Solve for x
   x = 617,759,157.86/33,186.98
6. Step 6: Final answer
   x = 18,614.50