Finding the Fourth Proportional to 9,665.57, 14,564.20 and 7,949.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,665.57 : 14,564.20 = 7,949.03 : x
2. Step 2: Convert to fraction form
   9,665.57/14,564.20 = 7,949.03/x
3. Step 3: Cross multiply
   9,665.57x = 14,564.20 × 7,949.03
4. Step 4: Simplify right side
   9,665.57x = 115,771,262.73
5. Step 5: Solve for x
   x = 115,771,262.73/9,665.57
6. Step 6: Final answer
   x = 11,977.70