Finding the Fourth Proportional to 9,396.18, 12,966.72 and 5,204.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,396.18 : 12,966.72 = 5,204.42 : x
2. Step 2: Convert to fraction form
   9,396.18/12,966.72 = 5,204.42/x
3. Step 3: Cross multiply
   9,396.18x = 12,966.72 × 5,204.42
4. Step 4: Simplify right side
   9,396.18x = 67,484,256.90
5. Step 5: Solve for x
   x = 67,484,256.90/9,396.18
6. Step 6: Final answer
   x = 7,182.09