Finding the Fourth Proportional to 16,429.15, 22,671.97 and 9,259.08

Step by Step Solution

1. Step 1: Write the proportion equation
   16,429.15 : 22,671.97 = 9,259.08 : x
2. Step 2: Convert to fraction form
   16,429.15/22,671.97 = 9,259.08/x
3. Step 3: Cross multiply
   16,429.15x = 22,671.97 × 9,259.08
4. Step 4: Simplify right side
   16,429.15x = 209,921,665.43
5. Step 5: Solve for x
   x = 209,921,665.43/16,429.15
6. Step 6: Final answer
   x = 12,777.39