Finding the Fourth Proportional to 20,449.50, 30,670.68 and 5,456.82

Step by Step Solution

1. Step 1: Write the proportion equation
   20,449.50 : 30,670.68 = 5,456.82 : x
2. Step 2: Convert to fraction form
   20,449.50/30,670.68 = 5,456.82/x
3. Step 3: Cross multiply
   20,449.50x = 30,670.68 × 5,456.82
4. Step 4: Simplify right side
   20,449.50x = 167,364,380.04
5. Step 5: Solve for x
   x = 167,364,380.04/20,449.50
6. Step 6: Final answer
   x = 8,184.28