Finding the Fourth Proportional to 5,540.68, 8,308.54 and 1,643.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,540.68 : 8,308.54 = 1,643.72 : x
2. Step 2: Convert to fraction form
   5,540.68/8,308.54 = 1,643.72/x
3. Step 3: Cross multiply
   5,540.68x = 8,308.54 × 1,643.72
4. Step 4: Simplify right side
   5,540.68x = 13,656,913.37
5. Step 5: Solve for x
   x = 13,656,913.37/5,540.68
6. Step 6: Final answer
   x = 2,464.84