Finding the Fourth Proportional to 6,111.45, 9,168.79 and 2,216.43

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.45 : 9,168.79 = 2,216.43 : x
2. Step 2: Convert to fraction form
   6,111.45/9,168.79 = 2,216.43/x
3. Step 3: Cross multiply
   6,111.45x = 9,168.79 × 2,216.43
4. Step 4: Simplify right side
   6,111.45x = 20,321,981.22
5. Step 5: Solve for x
   x = 20,321,981.22/6,111.45
6. Step 6: Final answer
   x = 3,325.23