Finding the Fourth Proportional to 21,996.27, 30,354.48 and 12,436.00

Step by Step Solution

1. Step 1: Write the proportion equation
   21,996.27 : 30,354.48 = 12,436.00 : x
2. Step 2: Convert to fraction form
   21,996.27/30,354.48 = 12,436.00/x
3. Step 3: Cross multiply
   21,996.27x = 30,354.48 × 12,436.00
4. Step 4: Simplify right side
   21,996.27x = 377,488,237.39
5. Step 5: Solve for x
   x = 377,488,237.39/21,996.27
6. Step 6: Final answer
   x = 17,161.47