Finding the Fourth Proportional to 21,747.82, 30,010.98 and 12,316.45

Step by Step Solution

1. Step 1: Write the proportion equation
   21,747.82 : 30,010.98 = 12,316.45 : x
2. Step 2: Convert to fraction form
   21,747.82/30,010.98 = 12,316.45/x
3. Step 3: Cross multiply
   21,747.82x = 30,010.98 × 12,316.45
4. Step 4: Simplify right side
   21,747.82x = 369,628,659.59
5. Step 5: Solve for x
   x = 369,628,659.59/21,747.82
6. Step 6: Final answer
   x = 16,996.13