Finding the Fourth Proportional to 9,378.18, 12,960.27 and 7,696.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,378.18 : 12,960.27 = 7,696.89 : x
2. Step 2: Convert to fraction form
   9,378.18/12,960.27 = 7,696.89/x
3. Step 3: Cross multiply
   9,378.18x = 12,960.27 × 7,696.89
4. Step 4: Simplify right side
   9,378.18x = 99,753,772.56
5. Step 5: Solve for x
   x = 99,753,772.56/9,378.18
6. Step 6: Final answer
   x = 10,636.79