Finding the Fourth Proportional to 3,424.23, 5,139.89 and 2,108.93

Step by Step Solution

1. Step 1: Write the proportion equation
   3,424.23 : 5,139.89 = 2,108.93 : x
2. Step 2: Convert to fraction form
   3,424.23/5,139.89 = 2,108.93/x
3. Step 3: Cross multiply
   3,424.23x = 5,139.89 × 2,108.93
4. Step 4: Simplify right side
   3,424.23x = 10,839,668.22
5. Step 5: Solve for x
   x = 10,839,668.22/3,424.23
6. Step 6: Final answer
   x = 3,165.58