Finding the Fourth Proportional to 5,364.72, 8,043.72 and 1,665.88

Step by Step Solution

1. Step 1: Write the proportion equation
   5,364.72 : 8,043.72 = 1,665.88 : x
2. Step 2: Convert to fraction form
   5,364.72/8,043.72 = 1,665.88/x
3. Step 3: Cross multiply
   5,364.72x = 8,043.72 × 1,665.88
4. Step 4: Simplify right side
   5,364.72x = 13,399,872.27
5. Step 5: Solve for x
   x = 13,399,872.27/5,364.72
6. Step 6: Final answer
   x = 2,497.78