Finding the Fourth Proportional to 16,357.55, 22,570.69 and 9,642.27

Step by Step Solution

1. Step 1: Write the proportion equation
   16,357.55 : 22,570.69 = 9,642.27 : x
2. Step 2: Convert to fraction form
   16,357.55/22,570.69 = 9,642.27/x
3. Step 3: Cross multiply
   16,357.55x = 22,570.69 × 9,642.27
4. Step 4: Simplify right side
   16,357.55x = 217,632,638.85
5. Step 5: Solve for x
   x = 217,632,638.85/16,357.55
6. Step 6: Final answer
   x = 13,304.72