Finding the Fourth Proportional to 9,357.69, 12,907.95 and 5,578.33

Step by Step Solution

1. Step 1: Write the proportion equation
   9,357.69 : 12,907.95 = 5,578.33 : x
2. Step 2: Convert to fraction form
   9,357.69/12,907.95 = 5,578.33/x
3. Step 3: Cross multiply
   9,357.69x = 12,907.95 × 5,578.33
4. Step 4: Simplify right side
   9,357.69x = 72,004,804.72
5. Step 5: Solve for x
   x = 72,004,804.72/9,357.69
6. Step 6: Final answer
   x = 7,694.72