Finding the Fourth Proportional to 21,846.96, 30,139.31 and 13,884.91

Step by Step Solution

1. Step 1: Write the proportion equation
   21,846.96 : 30,139.31 = 13,884.91 : x
2. Step 2: Convert to fraction form
   21,846.96/30,139.31 = 13,884.91/x
3. Step 3: Cross multiply
   21,846.96x = 30,139.31 × 13,884.91
4. Step 4: Simplify right side
   21,846.96x = 418,481,606.81
5. Step 5: Solve for x
   x = 418,481,606.81/21,846.96
6. Step 6: Final answer
   x = 19,155.14