Finding the Fourth Proportional to 3,612.74, 4,985.94 and 2,196.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,612.74 : 4,985.94 = 2,196.12 : x
2. Step 2: Convert to fraction form
   3,612.74/4,985.94 = 2,196.12/x
3. Step 3: Cross multiply
   3,612.74x = 4,985.94 × 2,196.12
4. Step 4: Simplify right side
   3,612.74x = 10,949,722.55
5. Step 5: Solve for x
   x = 10,949,722.55/3,612.74
6. Step 6: Final answer
   x = 3,030.86