Finding the Fourth Proportional to 9,649.38, 13,315.50 and 5,399.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,649.38 : 13,315.50 = 5,399.70 : x
2. Step 2: Convert to fraction form
   9,649.38/13,315.50 = 5,399.70/x
3. Step 3: Cross multiply
   9,649.38x = 13,315.50 × 5,399.70
4. Step 4: Simplify right side
   9,649.38x = 71,899,705.35
5. Step 5: Solve for x
   x = 71,899,705.35/9,649.38
6. Step 6: Final answer
   x = 7,451.23