Finding the Fourth Proportional to 21,016.97, 28,994.22 and 13,837.62

Step by Step Solution

1. Step 1: Write the proportion equation
   21,016.97 : 28,994.22 = 13,837.62 : x
2. Step 2: Convert to fraction form
   21,016.97/28,994.22 = 13,837.62/x
3. Step 3: Cross multiply
   21,016.97x = 28,994.22 × 13,837.62
4. Step 4: Simplify right side
   21,016.97x = 401,210,998.56
5. Step 5: Solve for x
   x = 401,210,998.56/21,016.97
6. Step 6: Final answer
   x = 19,089.86