Finding the Fourth Proportional to 9,138.30, 12,613.53 and 5,362.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,138.30 : 12,613.53 = 5,362.27 : x
2. Step 2: Convert to fraction form
   9,138.30/12,613.53 = 5,362.27/x
3. Step 3: Cross multiply
   9,138.30x = 12,613.53 × 5,362.27
4. Step 4: Simplify right side
   9,138.30x = 67,637,153.51
5. Step 5: Solve for x
   x = 67,637,153.51/9,138.30
6. Step 6: Final answer
   x = 7,401.50