Finding the Fourth Proportional to 21,975.71, 30,326.31 and 12,544.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,975.71 : 30,326.31 = 12,544.25 : x
2. Step 2: Convert to fraction form
   21,975.71/30,326.31 = 12,544.25/x
3. Step 3: Cross multiply
   21,975.71x = 30,326.31 × 12,544.25
4. Step 4: Simplify right side
   21,975.71x = 380,420,662.59
5. Step 5: Solve for x
   x = 380,420,662.59/21,975.71
6. Step 6: Final answer
   x = 17,310.97