Finding the Fourth Proportional to 13,724.29, 18,939.49 and 7,436.67

Step by Step Solution

1. Step 1: Write the proportion equation
   13,724.29 : 18,939.49 = 7,436.67 : x
2. Step 2: Convert to fraction form
   13,724.29/18,939.49 = 7,436.67/x
3. Step 3: Cross multiply
   13,724.29x = 18,939.49 × 7,436.67
4. Step 4: Simplify right side
   13,724.29x = 140,846,737.10
5. Step 5: Solve for x
   x = 140,846,737.10/13,724.29
6. Step 6: Final answer
   x = 10,262.59