Finding the Fourth Proportional to 14,411.89, 19,904.79 and 9,687.97

Step by Step Solution

1. Step 1: Write the proportion equation
   14,411.89 : 19,904.79 = 9,687.97 : x
2. Step 2: Convert to fraction form
   14,411.89/19,904.79 = 9,687.97/x
3. Step 3: Cross multiply
   14,411.89x = 19,904.79 × 9,687.97
4. Step 4: Simplify right side
   14,411.89x = 192,837,008.38
5. Step 5: Solve for x
   x = 192,837,008.38/14,411.89
6. Step 6: Final answer
   x = 13,380.41