Finding the Fourth Proportional to 21,945.47, 30,299.59 and 14,404.62

Step by Step Solution

1. Step 1: Write the proportion equation
   21,945.47 : 30,299.59 = 14,404.62 : x
2. Step 2: Convert to fraction form
   21,945.47/30,299.59 = 14,404.62/x
3. Step 3: Cross multiply
   21,945.47x = 30,299.59 × 14,404.62
4. Step 4: Simplify right side
   21,945.47x = 436,454,080.11
5. Step 5: Solve for x
   x = 436,454,080.11/21,945.47
6. Step 6: Final answer
   x = 19,888.12