Finding the Fourth Proportional to 19,561.50, 27,016.74 and 13,262.94

Step by Step Solution

1. Step 1: Write the proportion equation
   19,561.50 : 27,016.74 = 13,262.94 : x
2. Step 2: Convert to fraction form
   19,561.50/27,016.74 = 13,262.94/x
3. Step 3: Cross multiply
   19,561.50x = 27,016.74 × 13,262.94
4. Step 4: Simplify right side
   19,561.50x = 358,321,401.62
5. Step 5: Solve for x
   x = 358,321,401.62/19,561.50
6. Step 6: Final answer
   x = 18,317.69