Finding the Fourth Proportional to 16,609.91, 22,921.79 and 9,056.37

Step by Step Solution

1. Step 1: Write the proportion equation
   16,609.91 : 22,921.79 = 9,056.37 : x
2. Step 2: Convert to fraction form
   16,609.91/22,921.79 = 9,056.37/x
3. Step 3: Cross multiply
   16,609.91x = 22,921.79 × 9,056.37
4. Step 4: Simplify right side
   16,609.91x = 207,588,131.36
5. Step 5: Solve for x
   x = 207,588,131.36/16,609.91
6. Step 6: Final answer
   x = 12,497.85