Finding the Fourth Proportional to 13,721.52, 18,935.72 and 7,433.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,721.52 : 18,935.72 = 7,433.89 : x
2. Step 2: Convert to fraction form
   13,721.52/18,935.72 = 7,433.89/x
3. Step 3: Cross multiply
   13,721.52x = 18,935.72 × 7,433.89
4. Step 4: Simplify right side
   13,721.52x = 140,766,109.43
5. Step 5: Solve for x
   x = 140,766,109.43/13,721.52
6. Step 6: Final answer
   x = 10,258.79