Finding the Fourth Proportional to 3,635.76, 5,018.56 and 2,590.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,635.76 : 5,018.56 = 2,590.86 : x
2. Step 2: Convert to fraction form
   3,635.76/5,018.56 = 2,590.86/x
3. Step 3: Cross multiply
   3,635.76x = 5,018.56 × 2,590.86
4. Step 4: Simplify right side
   3,635.76x = 13,002,386.36
5. Step 5: Solve for x
   x = 13,002,386.36/3,635.76
6. Step 6: Final answer
   x = 3,576.25