Finding the Fourth Proportional to 8,320.34, 12,479.69 and 2,477.00

Step by Step Solution

1. Step 1: Write the proportion equation
   8,320.34 : 12,479.69 = 2,477.00 : x
2. Step 2: Convert to fraction form
   8,320.34/12,479.69 = 2,477.00/x
3. Step 3: Cross multiply
   8,320.34x = 12,479.69 × 2,477.00
4. Step 4: Simplify right side
   8,320.34x = 30,912,117.35
5. Step 5: Solve for x
   x = 30,912,117.35/8,320.34
6. Step 6: Final answer
   x = 3,715.25