Finding the Fourth Proportional to 19,019.94, 26,245.50 and 10,520.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,019.94 : 26,245.50 = 10,520.72 : x
2. Step 2: Convert to fraction form
   19,019.94/26,245.50 = 10,520.72/x
3. Step 3: Cross multiply
   19,019.94x = 26,245.50 × 10,520.72
4. Step 4: Simplify right side
   19,019.94x = 276,121,425.53
5. Step 5: Solve for x
   x = 276,121,425.53/19,019.94
6. Step 6: Final answer
   x = 14,517.47