Finding the Fourth Proportional to 33,436.10, 50,173.59 and 13,728.80

Step by Step Solution

1. Step 1: Write the proportion equation
   33,436.10 : 50,173.59 = 13,728.80 : x
2. Step 2: Convert to fraction form
   33,436.10/50,173.59 = 13,728.80/x
3. Step 3: Cross multiply
   33,436.10x = 50,173.59 × 13,728.80
4. Step 4: Simplify right side
   33,436.10x = 688,823,182.39
5. Step 5: Solve for x
   x = 688,823,182.39/33,436.10
6. Step 6: Final answer
   x = 20,601.18