Finding the Fourth Proportional to 6,478.46, 9,714.04 and 4,247.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,478.46 : 9,714.04 = 4,247.72 : x
2. Step 2: Convert to fraction form
   6,478.46/9,714.04 = 4,247.72/x
3. Step 3: Cross multiply
   6,478.46x = 9,714.04 × 4,247.72
4. Step 4: Simplify right side
   6,478.46x = 41,262,499.23
5. Step 5: Solve for x
   x = 41,262,499.23/6,478.46
6. Step 6: Final answer
   x = 6,369.18