Finding the Fourth Proportional to 9,676.70, 14,517.10 and 3,107.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,676.70 : 14,517.10 = 3,107.50 : x
2. Step 2: Convert to fraction form
   9,676.70/14,517.10 = 3,107.50/x
3. Step 3: Cross multiply
   9,676.70x = 14,517.10 × 3,107.50
4. Step 4: Simplify right side
   9,676.70x = 45,111,847.10
5. Step 5: Solve for x
   x = 45,111,847.10/9,676.70
6. Step 6: Final answer
   x = 4,661.90