Finding the Fourth Proportional to 9,396.72, 12,936.24 and 8,154.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,396.72 : 12,936.24 = 8,154.72 : x
2. Step 2: Convert to fraction form
   9,396.72/12,936.24 = 8,154.72/x
3. Step 3: Cross multiply
   9,396.72x = 12,936.24 × 8,154.72
4. Step 4: Simplify right side
   9,396.72x = 105,491,415.05
5. Step 5: Solve for x
   x = 105,491,415.05/9,396.72
6. Step 6: Final answer
   x = 11,226.41