Finding the Fourth Proportional to 5,139.22, 7,710.16 and 2,216.82

Step by Step Solution

1. Step 1: Write the proportion equation
   5,139.22 : 7,710.16 = 2,216.82 : x
2. Step 2: Convert to fraction form
   5,139.22/7,710.16 = 2,216.82/x
3. Step 3: Cross multiply
   5,139.22x = 7,710.16 × 2,216.82
4. Step 4: Simplify right side
   5,139.22x = 17,092,036.89
5. Step 5: Solve for x
   x = 17,092,036.89/5,139.22
6. Step 6: Final answer
   x = 3,325.80