Finding the Fourth Proportional to 21,892.79, 30,209.86 and 12,332.41

Step by Step Solution

1. Step 1: Write the proportion equation
   21,892.79 : 30,209.86 = 12,332.41 : x
2. Step 2: Convert to fraction form
   21,892.79/30,209.86 = 12,332.41/x
3. Step 3: Cross multiply
   21,892.79x = 30,209.86 × 12,332.41
4. Step 4: Simplify right side
   21,892.79x = 372,560,379.56
5. Step 5: Solve for x
   x = 372,560,379.56/21,892.79
6. Step 6: Final answer
   x = 17,017.49