Finding the Fourth Proportional to 9,162.65, 12,644.30 and 5,576.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,162.65 : 12,644.30 = 5,576.31 : x
2. Step 2: Convert to fraction form
   9,162.65/12,644.30 = 5,576.31/x
3. Step 3: Cross multiply
   9,162.65x = 12,644.30 × 5,576.31
4. Step 4: Simplify right side
   9,162.65x = 70,508,550.47
5. Step 5: Solve for x
   x = 70,508,550.47/9,162.65
6. Step 6: Final answer
   x = 7,695.21