Finding the Fourth Proportional to 16,638.50, 22,960.71 and 9,564.77

Step by Step Solution

1. Step 1: Write the proportion equation
   16,638.50 : 22,960.71 = 9,564.77 : x
2. Step 2: Convert to fraction form
   16,638.50/22,960.71 = 9,564.77/x
3. Step 3: Cross multiply
   16,638.50x = 22,960.71 × 9,564.77
4. Step 4: Simplify right side
   16,638.50x = 219,613,795.38
5. Step 5: Solve for x
   x = 219,613,795.38/16,638.50
6. Step 6: Final answer
   x = 13,199.14