Finding the Fourth Proportional to 7,146.16, 10,719.72 and 2,986.48

Step by Step Solution

1. Step 1: Write the proportion equation
   7,146.16 : 10,719.72 = 2,986.48 : x
2. Step 2: Convert to fraction form
   7,146.16/10,719.72 = 2,986.48/x
3. Step 3: Cross multiply
   7,146.16x = 10,719.72 × 2,986.48
4. Step 4: Simplify right side
   7,146.16x = 32,014,229.39
5. Step 5: Solve for x
   x = 32,014,229.39/7,146.16
6. Step 6: Final answer
   x = 4,479.92