Finding the Fourth Proportional to 21,323.97, 29,441.61 and 13,788.54

Step by Step Solution

1. Step 1: Write the proportion equation
   21,323.97 : 29,441.61 = 13,788.54 : x
2. Step 2: Convert to fraction form
   21,323.97/29,441.61 = 13,788.54/x
3. Step 3: Cross multiply
   21,323.97x = 29,441.61 × 13,788.54
4. Step 4: Simplify right side
   21,323.97x = 405,956,817.15
5. Step 5: Solve for x
   x = 405,956,817.15/21,323.97
6. Step 6: Final answer
   x = 19,037.58