Finding the Fourth Proportional to 16,564.96, 22,859.72 and 9,491.80

Step by Step Solution

1. Step 1: Write the proportion equation
   16,564.96 : 22,859.72 = 9,491.80 : x
2. Step 2: Convert to fraction form
   16,564.96/22,859.72 = 9,491.80/x
3. Step 3: Cross multiply
   16,564.96x = 22,859.72 × 9,491.80
4. Step 4: Simplify right side
   16,564.96x = 216,979,890.30
5. Step 5: Solve for x
   x = 216,979,890.30/16,564.96
6. Step 6: Final answer
   x = 13,098.73