Finding the Fourth Proportional to 7,145.56, 10,716.72 and 2,528.56

Step by Step Solution

1. Step 1: Write the proportion equation
   7,145.56 : 10,716.72 = 2,528.56 : x
2. Step 2: Convert to fraction form
   7,145.56/10,716.72 = 2,528.56/x
3. Step 3: Cross multiply
   7,145.56x = 10,716.72 × 2,528.56
4. Step 4: Simplify right side
   7,145.56x = 27,097,869.52
5. Step 5: Solve for x
   x = 27,097,869.52/7,145.56
6. Step 6: Final answer
   x = 3,792.27