Finding the Fourth Proportional to 3,967.78, 5,475.52 and 2,199.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,967.78 : 5,475.52 = 2,199.38 : x
2. Step 2: Convert to fraction form
   3,967.78/5,475.52 = 2,199.38/x
3. Step 3: Cross multiply
   3,967.78x = 5,475.52 × 2,199.38
4. Step 4: Simplify right side
   3,967.78x = 12,042,757.37
5. Step 5: Solve for x
   x = 12,042,757.37/3,967.78
6. Step 6: Final answer
   x = 3,035.14