Finding the Fourth Proportional to 33,480.56, 50,223.79 and 12,420.83

Step by Step Solution

1. Step 1: Write the proportion equation
   33,480.56 : 50,223.79 = 12,420.83 : x
2. Step 2: Convert to fraction form
   33,480.56/50,223.79 = 12,420.83/x
3. Step 3: Cross multiply
   33,480.56x = 50,223.79 × 12,420.83
4. Step 4: Simplify right side
   33,480.56x = 623,820,981.19
5. Step 5: Solve for x
   x = 623,820,981.19/33,480.56
6. Step 6: Final answer
   x = 18,632.34