Finding the Fourth Proportional to 10,680.24, 14,743.71 and 7,145.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,680.24 : 14,743.71 = 7,145.76 : x
2. Step 2: Convert to fraction form
   10,680.24/14,743.71 = 7,145.76/x
3. Step 3: Cross multiply
   10,680.24x = 14,743.71 × 7,145.76
4. Step 4: Simplify right side
   10,680.24x = 105,355,013.17
5. Step 5: Solve for x
   x = 105,355,013.17/10,680.24
6. Step 6: Final answer
   x = 9,864.48