Finding the Fourth Proportional to 16,588.40, 22,892.00 and 9,136.40

Step by Step Solution

1. Step 1: Write the proportion equation
   16,588.40 : 22,892.00 = 9,136.40 : x
2. Step 2: Convert to fraction form
   16,588.40/22,892.00 = 9,136.40/x
3. Step 3: Cross multiply
   16,588.40x = 22,892.00 × 9,136.40
4. Step 4: Simplify right side
   16,588.40x = 209,150,308.66
5. Step 5: Solve for x
   x = 209,150,308.66/16,588.40
6. Step 6: Final answer
   x = 12,608.23