Finding the Fourth Proportional to 33,142.64, 49,684.48 and 12,078.72

Step by Step Solution

1. Step 1: Write the proportion equation
   33,142.64 : 49,684.48 = 12,078.72 : x
2. Step 2: Convert to fraction form
   33,142.64/49,684.48 = 12,078.72/x
3. Step 3: Cross multiply
   33,142.64x = 49,684.48 × 12,078.72
4. Step 4: Simplify right side
   33,142.64x = 600,124,922.27
5. Step 5: Solve for x
   x = 600,124,922.27/33,142.64
6. Step 6: Final answer
   x = 18,107.34