Finding the Fourth Proportional to 16,636.52, 22,955.78 and 9,561.57

Step by Step Solution

1. Step 1: Write the proportion equation
   16,636.52 : 22,955.78 = 9,561.57 : x
2. Step 2: Convert to fraction form
   16,636.52/22,955.78 = 9,561.57/x
3. Step 3: Cross multiply
   16,636.52x = 22,955.78 × 9,561.57
4. Step 4: Simplify right side
   16,636.52x = 219,493,249.57
5. Step 5: Solve for x
   x = 219,493,249.57/16,636.52
6. Step 6: Final answer
   x = 13,193.46