Finding the Fourth Proportional to 6,105.30, 9,157.98 and 3,143.16

Step by Step Solution

1. Step 1: Write the proportion equation
   6,105.30 : 9,157.98 = 3,143.16 : x
2. Step 2: Convert to fraction form
   6,105.30/9,157.98 = 3,143.16/x
3. Step 3: Cross multiply
   6,105.30x = 9,157.98 × 3,143.16
4. Step 4: Simplify right side
   6,105.30x = 28,784,996.42
5. Step 5: Solve for x
   x = 28,784,996.42/6,105.30
6. Step 6: Final answer
   x = 4,714.76