Finding the Fourth Proportional to 21,604.14, 29,813.54 and 12,043.91

Step by Step Solution

1. Step 1: Write the proportion equation
   21,604.14 : 29,813.54 = 12,043.91 : x
2. Step 2: Convert to fraction form
   21,604.14/29,813.54 = 12,043.91/x
3. Step 3: Cross multiply
   21,604.14x = 29,813.54 × 12,043.91
4. Step 4: Simplify right side
   21,604.14x = 359,071,606.86
5. Step 5: Solve for x
   x = 359,071,606.86/21,604.14
6. Step 6: Final answer
   x = 16,620.50