Finding the Fourth Proportional to 2,669.27, 3,993.86 and 2,528.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,669.27 : 3,993.86 = 2,528.63 : x
2. Step 2: Convert to fraction form
   2,669.27/3,993.86 = 2,528.63/x
3. Step 3: Cross multiply
   2,669.27x = 3,993.86 × 2,528.63
4. Step 4: Simplify right side
   2,669.27x = 10,098,961.60
5. Step 5: Solve for x
   x = 10,098,961.60/2,669.27
6. Step 6: Final answer
   x = 3,783.42