Finding the Fourth Proportional to 5,412.06, 8,105.78 and 4,234.73

Step by Step Solution

1. Step 1: Write the proportion equation
   5,412.06 : 8,105.78 = 4,234.73 : x
2. Step 2: Convert to fraction form
   5,412.06/8,105.78 = 4,234.73/x
3. Step 3: Cross multiply
   5,412.06x = 8,105.78 × 4,234.73
4. Step 4: Simplify right side
   5,412.06x = 34,325,759.80
5. Step 5: Solve for x
   x = 34,325,759.80/5,412.06
6. Step 6: Final answer
   x = 6,342.46