Finding the Fourth Proportional to 12,049.31, 16,635.78 and 8,271.26

Step by Step Solution

1. Step 1: Write the proportion equation
   12,049.31 : 16,635.78 = 8,271.26 : x
2. Step 2: Convert to fraction form
   12,049.31/16,635.78 = 8,271.26/x
3. Step 3: Cross multiply
   12,049.31x = 16,635.78 × 8,271.26
4. Step 4: Simplify right side
   12,049.31x = 137,598,934.46
5. Step 5: Solve for x
   x = 137,598,934.46/12,049.31
6. Step 6: Final answer
   x = 11,419.66