Finding the Fourth Proportional to 3,436.74, 5,155.52 and 2,576.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,436.74 : 5,155.52 = 2,576.52 : x
2. Step 2: Convert to fraction form
   3,436.74/5,155.52 = 2,576.52/x
3. Step 3: Cross multiply
   3,436.74x = 5,155.52 × 2,576.52
4. Step 4: Simplify right side
   3,436.74x = 13,283,287.51
5. Step 5: Solve for x
   x = 13,283,287.51/3,436.74
6. Step 6: Final answer
   x = 3,865.08