Finding the Fourth Proportional to 8,018.82, 12,028.25 and 3,090.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,018.82 : 12,028.25 = 3,090.78 : x
2. Step 2: Convert to fraction form
   8,018.82/12,028.25 = 3,090.78/x
3. Step 3: Cross multiply
   8,018.82x = 12,028.25 × 3,090.78
4. Step 4: Simplify right side
   8,018.82x = 37,176,659.08
5. Step 5: Solve for x
   x = 37,176,659.08/8,018.82
6. Step 6: Final answer
   x = 4,636.18