Finding the Fourth Proportional to 12,392.96, 17,096.28 and 8,204.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,392.96 : 17,096.28 = 8,204.72 : x
2. Step 2: Convert to fraction form
   12,392.96/17,096.28 = 8,204.72/x
3. Step 3: Cross multiply
   12,392.96x = 17,096.28 × 8,204.72
4. Step 4: Simplify right side
   12,392.96x = 140,270,190.44
5. Step 5: Solve for x
   x = 140,270,190.44/12,392.96
6. Step 6: Final answer
   x = 11,318.54