Finding the Fourth Proportional to 16,561.52, 22,857.55 and 9,756.64

Step by Step Solution

1. Step 1: Write the proportion equation
   16,561.52 : 22,857.55 = 9,756.64 : x
2. Step 2: Convert to fraction form
   16,561.52/22,857.55 = 9,756.64/x
3. Step 3: Cross multiply
   16,561.52x = 22,857.55 × 9,756.64
4. Step 4: Simplify right side
   16,561.52x = 223,012,886.63
5. Step 5: Solve for x
   x = 223,012,886.63/16,561.52
6. Step 6: Final answer
   x = 13,465.73