Finding the Fourth Proportional to 3,987.22, 5,502.33 and 2,194.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,987.22 : 5,502.33 = 2,194.81 : x
2. Step 2: Convert to fraction form
   3,987.22/5,502.33 = 2,194.81/x
3. Step 3: Cross multiply
   3,987.22x = 5,502.33 × 2,194.81
4. Step 4: Simplify right side
   3,987.22x = 12,076,555.15
5. Step 5: Solve for x
   x = 12,076,555.15/3,987.22
6. Step 6: Final answer
   x = 3,028.82