Finding the Fourth Proportional to 10,422.12, 15,629.94 and 3,495

Step by Step Solution

1. Step 1: Write the proportion equation
   10,422.12 : 15,629.94 = 3,495 : x
2. Step 2: Convert to fraction form
   10,422.12/15,629.94 = 3,495/x
3. Step 3: Cross multiply
   10,422.12x = 15,629.94 × 3,495
4. Step 4: Simplify right side
   10,422.12x = 54,626,640.30
5. Step 5: Solve for x
   x = 54,626,640.30/10,422.12
6. Step 6: Final answer
   x = 5,241.41