Finding the Fourth Proportional to 19,665.14, 27,147.06 and 12,595.59

Step by Step Solution

1. Step 1: Write the proportion equation
   19,665.14 : 27,147.06 = 12,595.59 : x
2. Step 2: Convert to fraction form
   19,665.14/27,147.06 = 12,595.59/x
3. Step 3: Cross multiply
   19,665.14x = 27,147.06 × 12,595.59
4. Step 4: Simplify right side
   19,665.14x = 341,933,237.47
5. Step 5: Solve for x
   x = 341,933,237.47/19,665.14
6. Step 6: Final answer
   x = 17,387.79