Finding the Fourth Proportional to 3,529.98, 5,288.90 and 2,488.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,529.98 : 5,288.90 = 2,488.12 : x
2. Step 2: Convert to fraction form
   3,529.98/5,288.90 = 2,488.12/x
3. Step 3: Cross multiply
   3,529.98x = 5,288.90 × 2,488.12
4. Step 4: Simplify right side
   3,529.98x = 13,159,392.21
5. Step 5: Solve for x
   x = 13,159,392.21/3,529.98
6. Step 6: Final answer
   x = 3,727.89