Finding the Fourth Proportional to 3,934.17, 5,429.48 and 2,256.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,934.17 : 5,429.48 = 2,256.12 : x
2. Step 2: Convert to fraction form
   3,934.17/5,429.48 = 2,256.12/x
3. Step 3: Cross multiply
   3,934.17x = 5,429.48 × 2,256.12
4. Step 4: Simplify right side
   3,934.17x = 12,249,547.14
5. Step 5: Solve for x
   x = 12,249,547.14/3,934.17
6. Step 6: Final answer
   x = 3,113.63