Finding the Fourth Proportional to 21,736.41, 29,996.37 and 12,784.29

Step by Step Solution

1. Step 1: Write the proportion equation
   21,736.41 : 29,996.37 = 12,784.29 : x
2. Step 2: Convert to fraction form
   21,736.41/29,996.37 = 12,784.29/x
3. Step 3: Cross multiply
   21,736.41x = 29,996.37 × 12,784.29
4. Step 4: Simplify right side
   21,736.41x = 383,482,293.03
5. Step 5: Solve for x
   x = 383,482,293.03/21,736.41
6. Step 6: Final answer
   x = 17,642.39