Finding the Fourth Proportional to 20,060.18, 30,073.38 and 12,648.32

Step by Step Solution

1. Step 1: Write the proportion equation
   20,060.18 : 30,073.38 = 12,648.32 : x
2. Step 2: Convert to fraction form
   20,060.18/30,073.38 = 12,648.32/x
3. Step 3: Cross multiply
   20,060.18x = 30,073.38 × 12,648.32
4. Step 4: Simplify right side
   20,060.18x = 380,377,733.72
5. Step 5: Solve for x
   x = 380,377,733.72/20,060.18
6. Step 6: Final answer
   x = 18,961.83