Finding the Fourth Proportional to 7,329.76, 10,986.72 and 3,168.64

Step by Step Solution

1. Step 1: Write the proportion equation
   7,329.76 : 10,986.72 = 3,168.64 : x
2. Step 2: Convert to fraction form
   7,329.76/10,986.72 = 3,168.64/x
3. Step 3: Cross multiply
   7,329.76x = 10,986.72 × 3,168.64
4. Step 4: Simplify right side
   7,329.76x = 34,812,960.46
5. Step 5: Solve for x
   x = 34,812,960.46/7,329.76
6. Step 6: Final answer
   x = 4,749.54