Finding the Fourth Proportional to 19,826.50, 27,360.57 and 10,994.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,826.50 : 27,360.57 = 10,994.50 : x
2. Step 2: Convert to fraction form
   19,826.50/27,360.57 = 10,994.50/x
3. Step 3: Cross multiply
   19,826.50x = 27,360.57 × 10,994.50
4. Step 4: Simplify right side
   19,826.50x = 300,815,786.87
5. Step 5: Solve for x
   x = 300,815,786.87/19,826.50
6. Step 6: Final answer
   x = 15,172.41