Finding the Fourth Proportional to 7,533.72, 10,391.31 and 5,171.76

Step by Step Solution

1. Step 1: Write the proportion equation
   7,533.72 : 10,391.31 = 5,171.76 : x
2. Step 2: Convert to fraction form
   7,533.72/10,391.31 = 5,171.76/x
3. Step 3: Cross multiply
   7,533.72x = 10,391.31 × 5,171.76
4. Step 4: Simplify right side
   7,533.72x = 53,741,361.41
5. Step 5: Solve for x
   x = 53,741,361.41/7,533.72
6. Step 6: Final answer
   x = 7,133.44