Finding the Fourth Proportional to 7,272.42, 10,035.81 and 4,128.54

Step by Step Solution

1. Step 1: Write the proportion equation
   7,272.42 : 10,035.81 = 4,128.54 : x
2. Step 2: Convert to fraction form
   7,272.42/10,035.81 = 4,128.54/x
3. Step 3: Cross multiply
   7,272.42x = 10,035.81 × 4,128.54
4. Step 4: Simplify right side
   7,272.42x = 41,433,243.02
5. Step 5: Solve for x
   x = 41,433,243.02/7,272.42
6. Step 6: Final answer
   x = 5,697.31