Finding the Fourth Proportional to 3,869.52, 5,339.88 and 2,168.00

Step by Step Solution

1. Step 1: Write the proportion equation
   3,869.52 : 5,339.88 = 2,168.00 : x
2. Step 2: Convert to fraction form
   3,869.52/5,339.88 = 2,168.00/x
3. Step 3: Cross multiply
   3,869.52x = 5,339.88 × 2,168.00
4. Step 4: Simplify right side
   3,869.52x = 11,576,833.14
5. Step 5: Solve for x
   x = 11,576,833.14/3,869.52
6. Step 6: Final answer
   x = 2,991.80