Finding the Fourth Proportional to 19,641.89, 27,074.33 and 13,266.48

Step by Step Solution

1. Step 1: Write the proportion equation
   19,641.89 : 27,074.33 = 13,266.48 : x
2. Step 2: Convert to fraction form
   19,641.89/27,074.33 = 13,266.48/x
3. Step 3: Cross multiply
   19,641.89x = 27,074.33 × 13,266.48
4. Step 4: Simplify right side
   19,641.89x = 359,181,057.46
5. Step 5: Solve for x
   x = 359,181,057.46/19,641.89
6. Step 6: Final answer
   x = 18,286.49