Finding the Fourth Proportional to 4,685.94, 7,018.86 and 2,217.06

Step by Step Solution

1. Step 1: Write the proportion equation
   4,685.94 : 7,018.86 = 2,217.06 : x
2. Step 2: Convert to fraction form
   4,685.94/7,018.86 = 2,217.06/x
3. Step 3: Cross multiply
   4,685.94x = 7,018.86 × 2,217.06
4. Step 4: Simplify right side
   4,685.94x = 15,561,233.75
5. Step 5: Solve for x
   x = 15,561,233.75/4,685.94
6. Step 6: Final answer
   x = 3,320.84