Finding the Fourth Proportional to 33,433.72, 50,134.86 and 12,359.20

Step by Step Solution

1. Step 1: Write the proportion equation
   33,433.72 : 50,134.86 = 12,359.20 : x
2. Step 2: Convert to fraction form
   33,433.72/50,134.86 = 12,359.20/x
3. Step 3: Cross multiply
   33,433.72x = 50,134.86 × 12,359.20
4. Step 4: Simplify right side
   33,433.72x = 619,626,761.71
5. Step 5: Solve for x
   x = 619,626,761.71/33,433.72
6. Step 6: Final answer
   x = 18,532.99