Finding the Fourth Proportional to 12,315.24, 18,472.32 and 3,550.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,315.24 : 18,472.32 = 3,550.50 : x
2. Step 2: Convert to fraction form
   12,315.24/18,472.32 = 3,550.50/x
3. Step 3: Cross multiply
   12,315.24x = 18,472.32 × 3,550.50
4. Step 4: Simplify right side
   12,315.24x = 65,585,972.16
5. Step 5: Solve for x
   x = 65,585,972.16/12,315.24
6. Step 6: Final answer
   x = 5,325.59