Finding the Fourth Proportional to 4,106.72, 5,667.28 and 2,218.31

Step by Step Solution

1. Step 1: Write the proportion equation
   4,106.72 : 5,667.28 = 2,218.31 : x
2. Step 2: Convert to fraction form
   4,106.72/5,667.28 = 2,218.31/x
3. Step 3: Cross multiply
   4,106.72x = 5,667.28 × 2,218.31
4. Step 4: Simplify right side
   4,106.72x = 12,571,783.90
5. Step 5: Solve for x
   x = 12,571,783.90/4,106.72
6. Step 6: Final answer
   x = 3,061.27