Finding the Fourth Proportional to 22,428.25, 30,950.99 and 12,492.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,428.25 : 30,950.99 = 12,492.25 : x
2. Step 2: Convert to fraction form
   22,428.25/30,950.99 = 12,492.25/x
3. Step 3: Cross multiply
   22,428.25x = 30,950.99 × 12,492.25
4. Step 4: Simplify right side
   22,428.25x = 386,647,504.83
5. Step 5: Solve for x
   x = 386,647,504.83/22,428.25
6. Step 6: Final answer
   x = 17,239.31