Finding the Fourth Proportional to 9,355.33, 12,910.77 and 5,377.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,355.33 : 12,910.77 = 5,377.69 : x
2. Step 2: Convert to fraction form
   9,355.33/12,910.77 = 5,377.69/x
3. Step 3: Cross multiply
   9,355.33x = 12,910.77 × 5,377.69
4. Step 4: Simplify right side
   9,355.33x = 69,430,118.72
5. Step 5: Solve for x
   x = 69,430,118.72/9,355.33
6. Step 6: Final answer
   x = 7,421.45