Finding the Fourth Proportional to 13,721.50, 18,935.67 and 7,433.92

Step by Step Solution

1. Step 1: Write the proportion equation
   13,721.50 : 18,935.67 = 7,433.92 : x
2. Step 2: Convert to fraction form
   13,721.50/18,935.67 = 7,433.92/x
3. Step 3: Cross multiply
   13,721.50x = 18,935.67 × 7,433.92
4. Step 4: Simplify right side
   13,721.50x = 140,766,255.93
5. Step 5: Solve for x
   x = 140,766,255.93/13,721.50
6. Step 6: Final answer
   x = 10,258.81