Finding the Fourth Proportional to 19,365.57, 26,722.82 and 10,866.53

Step by Step Solution

1. Step 1: Write the proportion equation
   19,365.57 : 26,722.82 = 10,866.53 : x
2. Step 2: Convert to fraction form
   19,365.57/26,722.82 = 10,866.53/x
3. Step 3: Cross multiply
   19,365.57x = 26,722.82 × 10,866.53
4. Step 4: Simplify right side
   19,365.57x = 290,384,137.27
5. Step 5: Solve for x
   x = 290,384,137.27/19,365.57
6. Step 6: Final answer
   x = 14,994.87