Finding the Fourth Proportional to 3,764.80, 5,196.72 and 2,589.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,764.80 : 5,196.72 = 2,589.76 : x
2. Step 2: Convert to fraction form
   3,764.80/5,196.72 = 2,589.76/x
3. Step 3: Cross multiply
   3,764.80x = 5,196.72 × 2,589.76
4. Step 4: Simplify right side
   3,764.80x = 13,458,257.59
5. Step 5: Solve for x
   x = 13,458,257.59/3,764.80
6. Step 6: Final answer
   x = 3,574.76