Finding the Fourth Proportional to 21,783.69, 30,061.51 and 12,352.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,783.69 : 30,061.51 = 12,352.25 : x
2. Step 2: Convert to fraction form
   21,783.69/30,061.51 = 12,352.25/x
3. Step 3: Cross multiply
   21,783.69x = 30,061.51 × 12,352.25
4. Step 4: Simplify right side
   21,783.69x = 371,327,331.17
5. Step 5: Solve for x
   x = 371,327,331.17/21,783.69
6. Step 6: Final answer
   x = 17,046.12