Finding the Fourth Proportional to 5,160.33, 7,121.35 and 2,922.20

Step by Step Solution

1. Step 1: Write the proportion equation
   5,160.33 : 7,121.35 = 2,922.20 : x
2. Step 2: Convert to fraction form
   5,160.33/7,121.35 = 2,922.20/x
3. Step 3: Cross multiply
   5,160.33x = 7,121.35 × 2,922.20
4. Step 4: Simplify right side
   5,160.33x = 20,810,003.72
5. Step 5: Solve for x
   x = 20,810,003.72/5,160.33
6. Step 6: Final answer
   x = 4,032.69