Finding the Fourth Proportional to 7,151.67, 10,723.52 and 3,639.48

Step by Step Solution

1. Step 1: Write the proportion equation
   7,151.67 : 10,723.52 = 3,639.48 : x
2. Step 2: Convert to fraction form
   7,151.67/10,723.52 = 3,639.48/x
3. Step 3: Cross multiply
   7,151.67x = 10,723.52 × 3,639.48
4. Step 4: Simplify right side
   7,151.67x = 39,028,018.37
5. Step 5: Solve for x
   x = 39,028,018.37/7,151.67
6. Step 6: Final answer
   x = 5,457.19