Finding the Fourth Proportional to 16,169.59, 22,261.89 and 12,580.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,169.59 : 22,261.89 = 12,580.15 : x
2. Step 2: Convert to fraction form
   16,169.59/22,261.89 = 12,580.15/x
3. Step 3: Cross multiply
   16,169.59x = 22,261.89 × 12,580.15
4. Step 4: Simplify right side
   16,169.59x = 280,057,915.48
5. Step 5: Solve for x
   x = 280,057,915.48/16,169.59
6. Step 6: Final answer
   x = 17,320.04