Finding the Fourth Proportional to 33,516.56, 50,229.48 and 12,728.72

Step by Step Solution

1. Step 1: Write the proportion equation
   33,516.56 : 50,229.48 = 12,728.72 : x
2. Step 2: Convert to fraction form
   33,516.56/50,229.48 = 12,728.72/x
3. Step 3: Cross multiply
   33,516.56x = 50,229.48 × 12,728.72
4. Step 4: Simplify right side
   33,516.56x = 639,356,986.67
5. Step 5: Solve for x
   x = 639,356,986.67/33,516.56
6. Step 6: Final answer
   x = 19,075.85