Finding the Fourth Proportional to 19,019.69, 26,245.16 and 10,520.47

Step by Step Solution

1. Step 1: Write the proportion equation
   19,019.69 : 26,245.16 = 10,520.47 : x
2. Step 2: Convert to fraction form
   19,019.69/26,245.16 = 10,520.47/x
3. Step 3: Cross multiply
   19,019.69x = 26,245.16 × 10,520.47
4. Step 4: Simplify right side
   19,019.69x = 276,111,234.60
5. Step 5: Solve for x
   x = 276,111,234.60/19,019.69
6. Step 6: Final answer
   x = 14,517.13