Finding the Fourth Proportional to 22,178.56, 30,609.12 and 12,747.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,178.56 : 30,609.12 = 12,747.12 : x
2. Step 2: Convert to fraction form
   22,178.56/30,609.12 = 12,747.12/x
3. Step 3: Cross multiply
   22,178.56x = 30,609.12 × 12,747.12
4. Step 4: Simplify right side
   22,178.56x = 390,178,125.73
5. Step 5: Solve for x
   x = 390,178,125.73/22,178.56
6. Step 6: Final answer
   x = 17,592.58