Finding the Fourth Proportional to 19,443.78, 26,801.55 and 14,719.86

Step by Step Solution

1. Step 1: Write the proportion equation
   19,443.78 : 26,801.55 = 14,719.86 : x
2. Step 2: Convert to fraction form
   19,443.78/26,801.55 = 14,719.86/x
3. Step 3: Cross multiply
   19,443.78x = 26,801.55 × 14,719.86
4. Step 4: Simplify right side
   19,443.78x = 394,515,063.78
5. Step 5: Solve for x
   x = 394,515,063.78/19,443.78
6. Step 6: Final answer
   x = 20,290.04