Finding the Fourth Proportional to 3,412.35, 4,705.91 and 2,216.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,412.35 : 4,705.91 = 2,216.10 : x
2. Step 2: Convert to fraction form
   3,412.35/4,705.91 = 2,216.10/x
3. Step 3: Cross multiply
   3,412.35x = 4,705.91 × 2,216.10
4. Step 4: Simplify right side
   3,412.35x = 10,428,767.15
5. Step 5: Solve for x
   x = 10,428,767.15/3,412.35
6. Step 6: Final answer
   x = 3,056.18