Finding the Fourth Proportional to 13,727.34, 18,943.56 and 7,439.67

Step by Step Solution

1. Step 1: Write the proportion equation
   13,727.34 : 18,943.56 = 7,439.67 : x
2. Step 2: Convert to fraction form
   13,727.34/18,943.56 = 7,439.67/x
3. Step 3: Cross multiply
   13,727.34x = 18,943.56 × 7,439.67
4. Step 4: Simplify right side
   13,727.34x = 140,933,835.03
5. Step 5: Solve for x
   x = 140,933,835.03/13,727.34
6. Step 6: Final answer
   x = 10,266.65