Finding the Fourth Proportional to 6,641.43, 9,964.61 and 3,176.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,641.43 : 9,964.61 = 3,176.31 : x
2. Step 2: Convert to fraction form
   6,641.43/9,964.61 = 3,176.31/x
3. Step 3: Cross multiply
   6,641.43x = 9,964.61 × 3,176.31
4. Step 4: Simplify right side
   6,641.43x = 31,650,674.51
5. Step 5: Solve for x
   x = 31,650,674.51/6,641.43
6. Step 6: Final answer
   x = 4,765.64