Finding the Fourth Proportional to 4,856.91, 7,288.61 and 2,667.18

Step by Step Solution

1. Step 1: Write the proportion equation
   4,856.91 : 7,288.61 = 2,667.18 : x
2. Step 2: Convert to fraction form
   4,856.91/7,288.61 = 2,667.18/x
3. Step 3: Cross multiply
   4,856.91x = 7,288.61 × 2,667.18
4. Step 4: Simplify right side
   4,856.91x = 19,440,021.48
5. Step 5: Solve for x
   x = 19,440,021.48/4,856.91
6. Step 6: Final answer
   x = 4,002.55