Finding the Fourth Proportional to 33,787.79, 50,673.82 and 12,729.94

Step by Step Solution

1. Step 1: Write the proportion equation
   33,787.79 : 50,673.82 = 12,729.94 : x
2. Step 2: Convert to fraction form
   33,787.79/50,673.82 = 12,729.94/x
3. Step 3: Cross multiply
   33,787.79x = 50,673.82 × 12,729.94
4. Step 4: Simplify right side
   33,787.79x = 645,074,688.17
5. Step 5: Solve for x
   x = 645,074,688.17/33,787.79
6. Step 6: Final answer
   x = 19,091.95