Finding the Fourth Proportional to 8,935.72, 12,323.22 and 5,578.84

Step by Step Solution

1. Step 1: Write the proportion equation
   8,935.72 : 12,323.22 = 5,578.84 : x
2. Step 2: Convert to fraction form
   8,935.72/12,323.22 = 5,578.84/x
3. Step 3: Cross multiply
   8,935.72x = 12,323.22 × 5,578.84
4. Step 4: Simplify right side
   8,935.72x = 68,749,272.66
5. Step 5: Solve for x
   x = 68,749,272.66/8,935.72
6. Step 6: Final answer
   x = 7,693.76