Finding the Fourth Proportional to 16,065.48, 22,169.32 and 8,991.84

Step by Step Solution

1. Step 1: Write the proportion equation
   16,065.48 : 22,169.32 = 8,991.84 : x
2. Step 2: Convert to fraction form
   16,065.48/22,169.32 = 8,991.84/x
3. Step 3: Cross multiply
   16,065.48x = 22,169.32 × 8,991.84
4. Step 4: Simplify right side
   16,065.48x = 199,342,978.35
5. Step 5: Solve for x
   x = 199,342,978.35/16,065.48
6. Step 6: Final answer
   x = 12,408.16