Finding the Fourth Proportional to 7,111.97, 9,814.52 and 3,968.16

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.97 : 9,814.52 = 3,968.16 : x
2. Step 2: Convert to fraction form
   7,111.97/9,814.52 = 3,968.16/x
3. Step 3: Cross multiply
   7,111.97x = 9,814.52 × 3,968.16
4. Step 4: Simplify right side
   7,111.97x = 38,945,595.60
5. Step 5: Solve for x
   x = 38,945,595.60/7,111.97
6. Step 6: Final answer
   x = 5,476.06