Finding the Fourth Proportional to 7,111.49, 10,668.61 and 2,728.61

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.49 : 10,668.61 = 2,728.61 : x
2. Step 2: Convert to fraction form
   7,111.49/10,668.61 = 2,728.61/x
3. Step 3: Cross multiply
   7,111.49x = 10,668.61 × 2,728.61
4. Step 4: Simplify right side
   7,111.49x = 29,110,451.00
5. Step 5: Solve for x
   x = 29,110,451.00/7,111.49
6. Step 6: Final answer
   x = 4,093.44