Finding the Fourth Proportional to 8,320.82, 12,480.21 and 2,477.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,320.82 : 12,480.21 = 2,477.88 : x
2. Step 2: Convert to fraction form
   8,320.82/12,480.21 = 2,477.88/x
3. Step 3: Cross multiply
   8,320.82x = 12,480.21 × 2,477.88
4. Step 4: Simplify right side
   8,320.82x = 30,924,462.75
5. Step 5: Solve for x
   x = 30,924,462.75/8,320.82
6. Step 6: Final answer
   x = 3,716.52