Finding the Fourth Proportional to 9,377.70, 12,943.71 and 5,399.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,377.70 : 12,943.71 = 5,399.28 : x
2. Step 2: Convert to fraction form
   9,377.70/12,943.71 = 5,399.28/x
3. Step 3: Cross multiply
   9,377.70x = 12,943.71 × 5,399.28
4. Step 4: Simplify right side
   9,377.70x = 69,886,714.53
5. Step 5: Solve for x
   x = 69,886,714.53/9,377.70
6. Step 6: Final answer
   x = 7,452.44