Finding the Fourth Proportional to 33,123.28, 49,689.84 and 10,939

Step by Step Solution

1. Step 1: Write the proportion equation
   33,123.28 : 49,689.84 = 10,939 : x
2. Step 2: Convert to fraction form
   33,123.28/49,689.84 = 10,939/x
3. Step 3: Cross multiply
   33,123.28x = 49,689.84 × 10,939
4. Step 4: Simplify right side
   33,123.28x = 543,557,159.76
5. Step 5: Solve for x
   x = 543,557,159.76/33,123.28
6. Step 6: Final answer
   x = 16,410.12