Finding the Fourth Proportional to 7,111.08, 9,813.42 and 3,966.93

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.08 : 9,813.42 = 3,966.93 : x
2. Step 2: Convert to fraction form
   7,111.08/9,813.42 = 3,966.93/x
3. Step 3: Cross multiply
   7,111.08x = 9,813.42 × 3,966.93
4. Step 4: Simplify right side
   7,111.08x = 38,929,150.20
5. Step 5: Solve for x
   x = 38,929,150.20/7,111.08
6. Step 6: Final answer
   x = 5,474.44