Finding the Fourth Proportional to 3,856.38, 5,784.72 and 2,212.17

Step by Step Solution

1. Step 1: Write the proportion equation
   3,856.38 : 5,784.72 = 2,212.17 : x
2. Step 2: Convert to fraction form
   3,856.38/5,784.72 = 2,212.17/x
3. Step 3: Cross multiply
   3,856.38x = 5,784.72 × 2,212.17
4. Step 4: Simplify right side
   3,856.38x = 12,796,784.04
5. Step 5: Solve for x
   x = 12,796,784.04/3,856.38
6. Step 6: Final answer
   x = 3,318.34