Finding the Fourth Proportional to 9,377.39, 12,942.02 and 5,398.67

Step by Step Solution

1. Step 1: Write the proportion equation
   9,377.39 : 12,942.02 = 5,398.67 : x
2. Step 2: Convert to fraction form
   9,377.39/12,942.02 = 5,398.67/x
3. Step 3: Cross multiply
   9,377.39x = 12,942.02 × 5,398.67
4. Step 4: Simplify right side
   9,377.39x = 69,869,662.76
5. Step 5: Solve for x
   x = 69,869,662.76/9,377.39
6. Step 6: Final answer
   x = 7,450.87