Finding the Fourth Proportional to 33,121.78, 49,672.14 and 10,931.02

Step by Step Solution

1. Step 1: Write the proportion equation
   33,121.78 : 49,672.14 = 10,931.02 : x
2. Step 2: Convert to fraction form
   33,121.78/49,672.14 = 10,931.02/x
3. Step 3: Cross multiply
   33,121.78x = 49,672.14 × 10,931.02
4. Step 4: Simplify right side
   33,121.78x = 542,967,155.78
5. Step 5: Solve for x
   x = 542,967,155.78/33,121.78
6. Step 6: Final answer
   x = 16,393.05