Finding the Fourth Proportional to 16,064.96, 22,169.28 and 8,991.68

Step by Step Solution

1. Step 1: Write the proportion equation
   16,064.96 : 22,169.28 = 8,991.68 : x
2. Step 2: Convert to fraction form
   16,064.96/22,169.28 = 8,991.68/x
3. Step 3: Cross multiply
   16,064.96x = 22,169.28 × 8,991.68
4. Step 4: Simplify right side
   16,064.96x = 199,339,071.59
5. Step 5: Solve for x
   x = 199,339,071.59/16,064.96
6. Step 6: Final answer
   x = 12,408.31