Finding the Fourth Proportional to 19,015, 26,240.79 and 10,631.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,015 : 26,240.79 = 10,631.50 : x
2. Step 2: Convert to fraction form
   19,015/26,240.79 = 10,631.50/x
3. Step 3: Cross multiply
   19,015x = 26,240.79 × 10,631.50
4. Step 4: Simplify right side
   19,015x = 278,978,958.89
5. Step 5: Solve for x
   x = 278,978,958.89/19,015
6. Step 6: Final answer
   x = 14,671.52