Finding the Fourth Proportional to 5,085.16, 7,622.22 and 2,161.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,085.16 : 7,622.22 = 2,161.72 : x
2. Step 2: Convert to fraction form
   5,085.16/7,622.22 = 2,161.72/x
3. Step 3: Cross multiply
   5,085.16x = 7,622.22 × 2,161.72
4. Step 4: Simplify right side
   5,085.16x = 16,477,105.42
5. Step 5: Solve for x
   x = 16,477,105.42/5,085.16
6. Step 6: Final answer
   x = 3,240.23