Finding the Fourth Proportional to 3,905.94, 5,392.56 and 2,581.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,905.94 : 5,392.56 = 2,581.86 : x
2. Step 2: Convert to fraction form
   3,905.94/5,392.56 = 2,581.86/x
3. Step 3: Cross multiply
   3,905.94x = 5,392.56 × 2,581.86
4. Step 4: Simplify right side
   3,905.94x = 13,922,834.96
5. Step 5: Solve for x
   x = 13,922,834.96/3,905.94
6. Step 6: Final answer
   x = 3,564.53