Finding the Fourth Proportional to 12,926.72, 17,833.56 and 8,209.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,926.72 : 17,833.56 = 8,209.28 : x
2. Step 2: Convert to fraction form
   12,926.72/17,833.56 = 8,209.28/x
3. Step 3: Cross multiply
   12,926.72x = 17,833.56 × 8,209.28
4. Step 4: Simplify right side
   12,926.72x = 146,400,687.44
5. Step 5: Solve for x
   x = 146,400,687.44/12,926.72
6. Step 6: Final answer
   x = 11,325.43