Finding the Fourth Proportional to 11,663.92, 17,494.20 and 3,871.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,663.92 : 17,494.20 = 3,871.72 : x
2. Step 2: Convert to fraction form
   11,663.92/17,494.20 = 3,871.72/x
3. Step 3: Cross multiply
   11,663.92x = 17,494.20 × 3,871.72
4. Step 4: Simplify right side
   11,663.92x = 67,732,644.02
5. Step 5: Solve for x
   x = 67,732,644.02/11,663.92
6. Step 6: Final answer
   x = 5,807.02