Finding the Fourth Proportional to 9,401.38, 12,974.72 and 5,423.81

Step by Step Solution

1. Step 1: Write the proportion equation
   9,401.38 : 12,974.72 = 5,423.81 : x
2. Step 2: Convert to fraction form
   9,401.38/12,974.72 = 5,423.81/x
3. Step 3: Cross multiply
   9,401.38x = 12,974.72 × 5,423.81
4. Step 4: Simplify right side
   9,401.38x = 70,372,324.09
5. Step 5: Solve for x
   x = 70,372,324.09/9,401.38
6. Step 6: Final answer
   x = 7,485.32