Finding the Fourth Proportional to 9,355.92, 12,911.46 and 5,377.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,355.92 : 12,911.46 = 5,377.84 : x
2. Step 2: Convert to fraction form
   9,355.92/12,911.46 = 5,377.84/x
3. Step 3: Cross multiply
   9,355.92x = 12,911.46 × 5,377.84
4. Step 4: Simplify right side
   9,355.92x = 69,435,766.05
5. Step 5: Solve for x
   x = 69,435,766.05/9,355.92
6. Step 6: Final answer
   x = 7,421.59