Finding the Fourth Proportional to 16,564.89, 22,859.10 and 9,396.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,564.89 : 22,859.10 = 9,396.12 : x
2. Step 2: Convert to fraction form
   16,564.89/22,859.10 = 9,396.12/x
3. Step 3: Cross multiply
   16,564.89x = 22,859.10 × 9,396.12
4. Step 4: Simplify right side
   16,564.89x = 214,786,846.69
5. Step 5: Solve for x
   x = 214,786,846.69/16,564.89
6. Step 6: Final answer
   x = 12,966.39