Finding the Fourth Proportional to 8,467.30, 12,698.52 and 2,920.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,467.30 : 12,698.52 = 2,920.42 : x
2. Step 2: Convert to fraction form
   8,467.30/12,698.52 = 2,920.42/x
3. Step 3: Cross multiply
   8,467.30x = 12,698.52 × 2,920.42
4. Step 4: Simplify right side
   8,467.30x = 37,085,011.78
5. Step 5: Solve for x
   x = 37,085,011.78/8,467.30
6. Step 6: Final answer
   x = 4,379.79