Finding the Fourth Proportional to 6,609.71, 9,915.38 and 3,097.91

Step by Step Solution

1. Step 1: Write the proportion equation
   6,609.71 : 9,915.38 = 3,097.91 : x
2. Step 2: Convert to fraction form
   6,609.71/9,915.38 = 3,097.91/x
3. Step 3: Cross multiply
   6,609.71x = 9,915.38 × 3,097.91
4. Step 4: Simplify right side
   6,609.71x = 30,716,954.86
5. Step 5: Solve for x
   x = 30,716,954.86/6,609.71
6. Step 6: Final answer
   x = 4,647.25