Finding the Fourth Proportional to 7,150.72, 10,716.21 and 5,160.48

Step by Step Solution

1. Step 1: Write the proportion equation
   7,150.72 : 10,716.21 = 5,160.48 : x
2. Step 2: Convert to fraction form
   7,150.72/10,716.21 = 5,160.48/x
3. Step 3: Cross multiply
   7,150.72x = 10,716.21 × 5,160.48
4. Step 4: Simplify right side
   7,150.72x = 55,300,787.38
5. Step 5: Solve for x
   x = 55,300,787.38/7,150.72
6. Step 6: Final answer
   x = 7,733.60