Finding the Fourth Proportional to 8,320.65, 12,483.09 and 2,477.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,320.65 : 12,483.09 = 2,477.31 : x
2. Step 2: Convert to fraction form
   8,320.65/12,483.09 = 2,477.31/x
3. Step 3: Cross multiply
   8,320.65x = 12,483.09 × 2,477.31
4. Step 4: Simplify right side
   8,320.65x = 30,924,483.69
5. Step 5: Solve for x
   x = 30,924,483.69/8,320.65
6. Step 6: Final answer
   x = 3,716.59