Finding the Fourth Proportional to 33,724.04, 50,591.55 and 12,665.72

Step by Step Solution

1. Step 1: Write the proportion equation
   33,724.04 : 50,591.55 = 12,665.72 : x
2. Step 2: Convert to fraction form
   33,724.04/50,591.55 = 12,665.72/x
3. Step 3: Cross multiply
   33,724.04x = 50,591.55 × 12,665.72
4. Step 4: Simplify right side
   33,724.04x = 640,778,406.67
5. Step 5: Solve for x
   x = 640,778,406.67/33,724.04
6. Step 6: Final answer
   x = 19,000.64