Finding the Fourth Proportional to 22,578.52, 31,164.84 and 13,624.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,578.52 : 31,164.84 = 13,624.50 : x
2. Step 2: Convert to fraction form
   22,578.52/31,164.84 = 13,624.50/x
3. Step 3: Cross multiply
   22,578.52x = 31,164.84 × 13,624.50
4. Step 4: Simplify right side
   22,578.52x = 424,605,362.58
5. Step 5: Solve for x
   x = 424,605,362.58/22,578.52
6. Step 6: Final answer
   x = 18,805.72