Finding the Fourth Proportional to 13,727.76, 18,945.28 and 7,759.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,727.76 : 18,945.28 = 7,759.98 : x
2. Step 2: Convert to fraction form
   13,727.76/18,945.28 = 7,759.98/x
3. Step 3: Cross multiply
   13,727.76x = 18,945.28 × 7,759.98
4. Step 4: Simplify right side
   13,727.76x = 147,014,993.89
5. Step 5: Solve for x
   x = 147,014,993.89/13,727.76
6. Step 6: Final answer
   x = 10,709.32