Finding the Fourth Proportional to 3,892.50, 5,371.65 and 2,650.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,892.50 : 5,371.65 = 2,650.50 : x
2. Step 2: Convert to fraction form
   3,892.50/5,371.65 = 2,650.50/x
3. Step 3: Cross multiply
   3,892.50x = 5,371.65 × 2,650.50
4. Step 4: Simplify right side
   3,892.50x = 14,237,558.33
5. Step 5: Solve for x
   x = 14,237,558.33/3,892.50
6. Step 6: Final answer
   x = 3,657.69