Finding the Fourth Proportional to 14,105.76, 19,471 and 9,626.31

Step by Step Solution

1. Step 1: Write the proportion equation
   14,105.76 : 19,471 = 9,626.31 : x
2. Step 2: Convert to fraction form
   14,105.76/19,471 = 9,626.31/x
3. Step 3: Cross multiply
   14,105.76x = 19,471 × 9,626.31
4. Step 4: Simplify right side
   14,105.76x = 187,433,882.01
5. Step 5: Solve for x
   x = 187,433,882.01/14,105.76
6. Step 6: Final answer
   x = 13,287.75