Finding the Fourth Proportional to 12,266.44, 16,918.56 and 7,786.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,266.44 : 16,918.56 = 7,786.30 : x
2. Step 2: Convert to fraction form
   12,266.44/16,918.56 = 7,786.30/x
3. Step 3: Cross multiply
   12,266.44x = 16,918.56 × 7,786.30
4. Step 4: Simplify right side
   12,266.44x = 131,732,983.73
5. Step 5: Solve for x
   x = 131,732,983.73/12,266.44
6. Step 6: Final answer
   x = 10,739.30