Finding the Fourth Proportional to 8,958.23, 12,367.89 and 5,772.65

Step by Step Solution

1. Step 1: Write the proportion equation
   8,958.23 : 12,367.89 = 5,772.65 : x
2. Step 2: Convert to fraction form
   8,958.23/12,367.89 = 5,772.65/x
3. Step 3: Cross multiply
   8,958.23x = 12,367.89 × 5,772.65
4. Step 4: Simplify right side
   8,958.23x = 71,395,507.94
5. Step 5: Solve for x
   x = 71,395,507.94/8,958.23
6. Step 6: Final answer
   x = 7,969.82