Finding the Fourth Proportional to 7,271.83, 10,035.45 and 4,128.31

Step by Step Solution

1. Step 1: Write the proportion equation
   7,271.83 : 10,035.45 = 4,128.31 : x
2. Step 2: Convert to fraction form
   7,271.83/10,035.45 = 4,128.31/x
3. Step 3: Cross multiply
   7,271.83x = 10,035.45 × 4,128.31
4. Step 4: Simplify right side
   7,271.83x = 41,429,448.59
5. Step 5: Solve for x
   x = 41,429,448.59/7,271.83
6. Step 6: Final answer
   x = 5,697.25