Finding the Fourth Proportional to 5,456.70, 8,185.83 and 2,124.29

Step by Step Solution

1. Step 1: Write the proportion equation
   5,456.70 : 8,185.83 = 2,124.29 : x
2. Step 2: Convert to fraction form
   5,456.70/8,185.83 = 2,124.29/x
3. Step 3: Cross multiply
   5,456.70x = 8,185.83 × 2,124.29
4. Step 4: Simplify right side
   5,456.70x = 17,389,089.31
5. Step 5: Solve for x
   x = 17,389,089.31/5,456.70
6. Step 6: Final answer
   x = 3,186.74