Finding the Fourth Proportional to 33,900.78, 50,846.70 and 8,942.78

Step by Step Solution

1. Step 1: Write the proportion equation
   33,900.78 : 50,846.70 = 8,942.78 : x
2. Step 2: Convert to fraction form
   33,900.78/50,846.70 = 8,942.78/x
3. Step 3: Cross multiply
   33,900.78x = 50,846.70 × 8,942.78
4. Step 4: Simplify right side
   33,900.78x = 454,710,851.83
5. Step 5: Solve for x
   x = 454,710,851.83/33,900.78
6. Step 6: Final answer
   x = 13,412.99