Finding the Fourth Proportional to 22,564.69, 31,138.24 and 12,492.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,564.69 : 31,138.24 = 12,492.42 : x
2. Step 2: Convert to fraction form
   22,564.69/31,138.24 = 12,492.42/x
3. Step 3: Cross multiply
   22,564.69x = 31,138.24 × 12,492.42
4. Step 4: Simplify right side
   22,564.69x = 388,991,972.14
5. Step 5: Solve for x
   x = 388,991,972.14/22,564.69
6. Step 6: Final answer
   x = 17,238.97