Finding the Fourth Proportional to 13,737.24, 18,958.33 and 7,768.91

Step by Step Solution

1. Step 1: Write the proportion equation
   13,737.24 : 18,958.33 = 7,768.91 : x
2. Step 2: Convert to fraction form
   13,737.24/18,958.33 = 7,768.91/x
3. Step 3: Cross multiply
   13,737.24x = 18,958.33 × 7,768.91
4. Step 4: Simplify right side
   13,737.24x = 147,285,445.31
5. Step 5: Solve for x
   x = 147,285,445.31/13,737.24
6. Step 6: Final answer
   x = 10,721.62