Finding the Fourth Proportional to 9,377.72, 12,942.83 and 5,398.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,377.72 : 12,942.83 = 5,398.10 : x
2. Step 2: Convert to fraction form
   9,377.72/12,942.83 = 5,398.10/x
3. Step 3: Cross multiply
   9,377.72x = 12,942.83 × 5,398.10
4. Step 4: Simplify right side
   9,377.72x = 69,866,598.92
5. Step 5: Solve for x
   x = 69,866,598.92/9,377.72
6. Step 6: Final answer
   x = 7,450.28