Finding the Fourth Proportional to 3,668.72, 5,501.92 and 1,936.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,668.72 : 5,501.92 = 1,936.40 : x
2. Step 2: Convert to fraction form
   3,668.72/5,501.92 = 1,936.40/x
3. Step 3: Cross multiply
   3,668.72x = 5,501.92 × 1,936.40
4. Step 4: Simplify right side
   3,668.72x = 10,653,917.89
5. Step 5: Solve for x
   x = 10,653,917.89/3,668.72
6. Step 6: Final answer
   x = 2,903.99