Finding the Fourth Proportional to 7,111.52, 9,814.28 and 3,967.68

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.52 : 9,814.28 = 3,967.68 : x
2. Step 2: Convert to fraction form
   7,111.52/9,814.28 = 3,967.68/x
3. Step 3: Cross multiply
   7,111.52x = 9,814.28 × 3,967.68
4. Step 4: Simplify right side
   7,111.52x = 38,939,922.47
5. Step 5: Solve for x
   x = 38,939,922.47/7,111.52
6. Step 6: Final answer
   x = 5,475.61