Finding the Fourth Proportional to 3,967.56, 5,475.30 and 2,199.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,967.56 : 5,475.30 = 2,199.12 : x
2. Step 2: Convert to fraction form
   3,967.56/5,475.30 = 2,199.12/x
3. Step 3: Cross multiply
   3,967.56x = 5,475.30 × 2,199.12
4. Step 4: Simplify right side
   3,967.56x = 12,040,841.74
5. Step 5: Solve for x
   x = 12,040,841.74/3,967.56
6. Step 6: Final answer
   x = 3,034.82