Finding the Fourth Proportional to 7,222.56, 9,957.50 and 5,735.40

Step by Step Solution

1. Step 1: Write the proportion equation
   7,222.56 : 9,957.50 = 5,735.40 : x
2. Step 2: Convert to fraction form
   7,222.56/9,957.50 = 5,735.40/x
3. Step 3: Cross multiply
   7,222.56x = 9,957.50 × 5,735.40
4. Step 4: Simplify right side
   7,222.56x = 57,110,216.82
5. Step 5: Solve for x
   x = 57,110,216.82/7,222.56
6. Step 6: Final answer
   x = 7,907.20