Finding the Fourth Proportional to 22,131.11, 30,540.15 and 12,440.27

Step by Step Solution

1. Step 1: Write the proportion equation
   22,131.11 : 30,540.15 = 12,440.27 : x
2. Step 2: Convert to fraction form
   22,131.11/30,540.15 = 12,440.27/x
3. Step 3: Cross multiply
   22,131.11x = 30,540.15 × 12,440.27
4. Step 4: Simplify right side
   22,131.11x = 379,927,559.14
5. Step 5: Solve for x
   x = 379,927,559.14/22,131.11
6. Step 6: Final answer
   x = 17,167.13