Finding the Fourth Proportional to 22,185.62, 30,613.64 and 12,757.22

Step by Step Solution

1. Step 1: Write the proportion equation
   22,185.62 : 30,613.64 = 12,757.22 : x
2. Step 2: Convert to fraction form
   22,185.62/30,613.64 = 12,757.22/x
3. Step 3: Cross multiply
   22,185.62x = 30,613.64 × 12,757.22
4. Step 4: Simplify right side
   22,185.62x = 390,544,940.48
5. Step 5: Solve for x
   x = 390,544,940.48/22,185.62
6. Step 6: Final answer
   x = 17,603.52