Finding the Fourth Proportional to 16,288.41, 22,481.52 and 9,917.07

Step by Step Solution

1. Step 1: Write the proportion equation
   16,288.41 : 22,481.52 = 9,917.07 : x
2. Step 2: Convert to fraction form
   16,288.41/22,481.52 = 9,917.07/x
3. Step 3: Cross multiply
   16,288.41x = 22,481.52 × 9,917.07
4. Step 4: Simplify right side
   16,288.41x = 222,950,807.55
5. Step 5: Solve for x
   x = 222,950,807.55/16,288.41
6. Step 6: Final answer
   x = 13,687.70