Finding the Fourth Proportional to 33,851.34, 50,763 and 12,787.80

Step by Step Solution

1. Step 1: Write the proportion equation
   33,851.34 : 50,763 = 12,787.80 : x
2. Step 2: Convert to fraction form
   33,851.34/50,763 = 12,787.80/x
3. Step 3: Cross multiply
   33,851.34x = 50,763 × 12,787.80
4. Step 4: Simplify right side
   33,851.34x = 649,147,091.40
5. Step 5: Solve for x
   x = 649,147,091.40/33,851.34
6. Step 6: Final answer
   x = 19,176.41