Finding the Fourth Proportional to 21,945.32, 30,285.06 and 12,514.76

Step by Step Solution

1. Step 1: Write the proportion equation
   21,945.32 : 30,285.06 = 12,514.76 : x
2. Step 2: Convert to fraction form
   21,945.32/30,285.06 = 12,514.76/x
3. Step 3: Cross multiply
   21,945.32x = 30,285.06 × 12,514.76
4. Step 4: Simplify right side
   21,945.32x = 379,010,257.49
5. Step 5: Solve for x
   x = 379,010,257.49/21,945.32
6. Step 6: Final answer
   x = 17,270.66