Finding the Fourth Proportional to 6,429.36, 8,871.72 and 3,596.88

Step by Step Solution

1. Step 1: Write the proportion equation
   6,429.36 : 8,871.72 = 3,596.88 : x
2. Step 2: Convert to fraction form
   6,429.36/8,871.72 = 3,596.88/x
3. Step 3: Cross multiply
   6,429.36x = 8,871.72 × 3,596.88
4. Step 4: Simplify right side
   6,429.36x = 31,910,512.23
5. Step 5: Solve for x
   x = 31,910,512.23/6,429.36
6. Step 6: Final answer
   x = 4,963.25