Finding the Fourth Proportional to 7,111.88, 9,814.39 and 3,968.06

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.88 : 9,814.39 = 3,968.06 : x
2. Step 2: Convert to fraction form
   7,111.88/9,814.39 = 3,968.06/x
3. Step 3: Cross multiply
   7,111.88x = 9,814.39 × 3,968.06
4. Step 4: Simplify right side
   7,111.88x = 38,944,103.00
5. Step 5: Solve for x
   x = 38,944,103.00/7,111.88
6. Step 6: Final answer
   x = 5,475.93