Finding the Fourth Proportional to 33,511.28, 50,271.78 and 10,139.72

Step by Step Solution

1. Step 1: Write the proportion equation
   33,511.28 : 50,271.78 = 10,139.72 : x
2. Step 2: Convert to fraction form
   33,511.28/50,271.78 = 10,139.72/x
3. Step 3: Cross multiply
   33,511.28x = 50,271.78 × 10,139.72
4. Step 4: Simplify right side
   33,511.28x = 509,741,773.10
5. Step 5: Solve for x
   x = 509,741,773.10/33,511.28
6. Step 6: Final answer
   x = 15,211.05