Finding the Fourth Proportional to 9,401.05, 12,972.99 and 5,422.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,401.05 : 12,972.99 = 5,422.24 : x
2. Step 2: Convert to fraction form
   9,401.05/12,972.99 = 5,422.24/x
3. Step 3: Cross multiply
   9,401.05x = 12,972.99 × 5,422.24
4. Step 4: Simplify right side
   9,401.05x = 70,342,665.30
5. Step 5: Solve for x
   x = 70,342,665.30/9,401.05
6. Step 6: Final answer
   x = 7,482.43