Finding the Fourth Proportional to 6,443.38, 9,663.78 and 3,154.42

Step by Step Solution

1. Step 1: Write the proportion equation
   6,443.38 : 9,663.78 = 3,154.42 : x
2. Step 2: Convert to fraction form
   6,443.38/9,663.78 = 3,154.42/x
3. Step 3: Cross multiply
   6,443.38x = 9,663.78 × 3,154.42
4. Step 4: Simplify right side
   6,443.38x = 30,483,620.91
5. Step 5: Solve for x
   x = 30,483,620.91/6,443.38
6. Step 6: Final answer
   x = 4,731.00