Finding the Fourth Proportional to 8,581.77, 12,875.35 and 3,648.87

Step by Step Solution

1. Step 1: Write the proportion equation
   8,581.77 : 12,875.35 = 3,648.87 : x
2. Step 2: Convert to fraction form
   8,581.77/12,875.35 = 3,648.87/x
3. Step 3: Cross multiply
   8,581.77x = 12,875.35 × 3,648.87
4. Step 4: Simplify right side
   8,581.77x = 46,980,404.86
5. Step 5: Solve for x
   x = 46,980,404.86/8,581.77
6. Step 6: Final answer
   x = 5,474.45