Finding the Fourth Proportional to 19,017.59, 26,243.73 and 10,520.15

Step by Step Solution

1. Step 1: Write the proportion equation
   19,017.59 : 26,243.73 = 10,520.15 : x
2. Step 2: Convert to fraction form
   19,017.59/26,243.73 = 10,520.15/x
3. Step 3: Cross multiply
   19,017.59x = 26,243.73 × 10,520.15
4. Step 4: Simplify right side
   19,017.59x = 276,087,844.94
5. Step 5: Solve for x
   x = 276,087,844.94/19,017.59
6. Step 6: Final answer
   x = 14,517.50