Finding the Fourth Proportional to 3,967.86, 5,475.45 and 2,199.45

Step by Step Solution

1. Step 1: Write the proportion equation
   3,967.86 : 5,475.45 = 2,199.45 : x
2. Step 2: Convert to fraction form
   3,967.86/5,475.45 = 2,199.45/x
3. Step 3: Cross multiply
   3,967.86x = 5,475.45 × 2,199.45
4. Step 4: Simplify right side
   3,967.86x = 12,042,978.50
5. Step 5: Solve for x
   x = 12,042,978.50/3,967.86
6. Step 6: Final answer
   x = 3,035.13