Finding the Fourth Proportional to 4,128.80, 5,694.72 and 2,635.52

Step by Step Solution

1. Step 1: Write the proportion equation
   4,128.80 : 5,694.72 = 2,635.52 : x
2. Step 2: Convert to fraction form
   4,128.80/5,694.72 = 2,635.52/x
3. Step 3: Cross multiply
   4,128.80x = 5,694.72 × 2,635.52
4. Step 4: Simplify right side
   4,128.80x = 15,008,548.45
5. Step 5: Solve for x
   x = 15,008,548.45/4,128.80
6. Step 6: Final answer
   x = 3,635.09