Finding the Fourth Proportional to 22,309.56, 30,787.97 and 12,238.43

Step by Step Solution

1. Step 1: Write the proportion equation
   22,309.56 : 30,787.97 = 12,238.43 : x
2. Step 2: Convert to fraction form
   22,309.56/30,787.97 = 12,238.43/x
3. Step 3: Cross multiply
   22,309.56x = 30,787.97 × 12,238.43
4. Step 4: Simplify right side
   22,309.56x = 376,796,200.56
5. Step 5: Solve for x
   x = 376,796,200.56/22,309.56
6. Step 6: Final answer
   x = 16,889.45