Finding the Fourth Proportional to 20,017.50, 27,624.15 and 11,185.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,017.50 : 27,624.15 = 11,185.50 : x
2. Step 2: Convert to fraction form
   20,017.50/27,624.15 = 11,185.50/x
3. Step 3: Cross multiply
   20,017.50x = 27,624.15 × 11,185.50
4. Step 4: Simplify right side
   20,017.50x = 308,989,929.83
5. Step 5: Solve for x
   x = 308,989,929.83/20,017.50
6. Step 6: Final answer
   x = 15,435.99