Finding the Fourth Proportional to 20,498.70, 30,748.59 and 8,018.22

Step by Step Solution

1. Step 1: Write the proportion equation
   20,498.70 : 30,748.59 = 8,018.22 : x
2. Step 2: Convert to fraction form
   20,498.70/30,748.59 = 8,018.22/x
3. Step 3: Cross multiply
   20,498.70x = 30,748.59 × 8,018.22
4. Step 4: Simplify right side
   20,498.70x = 246,548,959.31
5. Step 5: Solve for x
   x = 246,548,959.31/20,498.70
6. Step 6: Final answer
   x = 12,027.54