Finding the Fourth Proportional to 19,667.55, 27,078.53 and 18,326.19

Step by Step Solution

1. Step 1: Write the proportion equation
   19,667.55 : 27,078.53 = 18,326.19 : x
2. Step 2: Convert to fraction form
   19,667.55/27,078.53 = 18,326.19/x
3. Step 3: Cross multiply
   19,667.55x = 27,078.53 × 18,326.19
4. Step 4: Simplify right side
   19,667.55x = 496,246,194.07
5. Step 5: Solve for x
   x = 496,246,194.07/19,667.55
6. Step 6: Final answer
   x = 25,231.72