Finding the Fourth Proportional to 12,480.42, 18,725.34 and 5,820.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,480.42 : 18,725.34 = 5,820.32 : x
2. Step 2: Convert to fraction form
   12,480.42/18,725.34 = 5,820.32/x
3. Step 3: Cross multiply
   12,480.42x = 18,725.34 × 5,820.32
4. Step 4: Simplify right side
   12,480.42x = 108,987,470.91
5. Step 5: Solve for x
   x = 108,987,470.91/12,480.42
6. Step 6: Final answer
   x = 8,732.68