Finding the Fourth Proportional to 3,766.86, 5,200.86 and 2,881.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,766.86 : 5,200.86 = 2,881.12 : x
2. Step 2: Convert to fraction form
   3,766.86/5,200.86 = 2,881.12/x
3. Step 3: Cross multiply
   3,766.86x = 5,200.86 × 2,881.12
4. Step 4: Simplify right side
   3,766.86x = 14,984,301.76
5. Step 5: Solve for x
   x = 14,984,301.76/3,766.86
6. Step 6: Final answer
   x = 3,977.93