Finding the Fourth Proportional to 21,843.75, 30,146.82 and 13,460.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,843.75 : 30,146.82 = 13,460.25 : x
2. Step 2: Convert to fraction form
   21,843.75/30,146.82 = 13,460.25/x
3. Step 3: Cross multiply
   21,843.75x = 30,146.82 × 13,460.25
4. Step 4: Simplify right side
   21,843.75x = 405,783,733.91
5. Step 5: Solve for x
   x = 405,783,733.91/21,843.75
6. Step 6: Final answer
   x = 18,576.65