Finding the Fourth Proportional to 33,120.89, 49,674.28 and 10,929.05

Step by Step Solution

1. Step 1: Write the proportion equation
   33,120.89 : 49,674.28 = 10,929.05 : x
2. Step 2: Convert to fraction form
   33,120.89/49,674.28 = 10,929.05/x
3. Step 3: Cross multiply
   33,120.89x = 49,674.28 × 10,929.05
4. Step 4: Simplify right side
   33,120.89x = 542,892,689.83
5. Step 5: Solve for x
   x = 542,892,689.83/33,120.89
6. Step 6: Final answer
   x = 16,391.25