Finding the Fourth Proportional to 5,406.56, 8,109.92 and 1,708.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,406.56 : 8,109.92 = 1,708.72 : x
2. Step 2: Convert to fraction form
   5,406.56/8,109.92 = 1,708.72/x
3. Step 3: Cross multiply
   5,406.56x = 8,109.92 × 1,708.72
4. Step 4: Simplify right side
   5,406.56x = 13,857,582.50
5. Step 5: Solve for x
   x = 13,857,582.50/5,406.56
6. Step 6: Final answer
   x = 2,563.11