Finding the Fourth Proportional to 4,086.96, 5,640.18 and 2,318.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,086.96 : 5,640.18 = 2,318.72 : x
2. Step 2: Convert to fraction form
   4,086.96/5,640.18 = 2,318.72/x
3. Step 3: Cross multiply
   4,086.96x = 5,640.18 × 2,318.72
4. Step 4: Simplify right side
   4,086.96x = 13,077,998.17
5. Step 5: Solve for x
   x = 13,077,998.17/4,086.96
6. Step 6: Final answer
   x = 3,199.93