Finding the Fourth Proportional to 3,967.86, 5,475.82 and 2,199.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,967.86 : 5,475.82 = 2,199.35 : x
2. Step 2: Convert to fraction form
   3,967.86/5,475.82 = 2,199.35/x
3. Step 3: Cross multiply
   3,967.86x = 5,475.82 × 2,199.35
4. Step 4: Simplify right side
   3,967.86x = 12,043,244.72
5. Step 5: Solve for x
   x = 12,043,244.72/3,967.86
6. Step 6: Final answer
   x = 3,035.20