Finding the Fourth Proportional to 8,320.70, 12,468.72 and 3,636.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,320.70 : 12,468.72 = 3,636.42 : x
2. Step 2: Convert to fraction form
   8,320.70/12,468.72 = 3,636.42/x
3. Step 3: Cross multiply
   8,320.70x = 12,468.72 × 3,636.42
4. Step 4: Simplify right side
   8,320.70x = 45,341,502.78
5. Step 5: Solve for x
   x = 45,341,502.78/8,320.70
6. Step 6: Final answer
   x = 5,449.24