Finding the Fourth Proportional to 19,016.42, 26,234.62 and 12,730.82

Step by Step Solution

1. Step 1: Write the proportion equation
   19,016.42 : 26,234.62 = 12,730.82 : x
2. Step 2: Convert to fraction form
   19,016.42/26,234.62 = 12,730.82/x
3. Step 3: Cross multiply
   19,016.42x = 26,234.62 × 12,730.82
4. Step 4: Simplify right side
   19,016.42x = 333,988,061.99
5. Step 5: Solve for x
   x = 333,988,061.99/19,016.42
6. Step 6: Final answer
   x = 17,563.15