Finding the Fourth Proportional to 19,595.40, 27,042.59 and 12,042.05

Step by Step Solution

1. Step 1: Write the proportion equation
   19,595.40 : 27,042.59 = 12,042.05 : x
2. Step 2: Convert to fraction form
   19,595.40/27,042.59 = 12,042.05/x
3. Step 3: Cross multiply
   19,595.40x = 27,042.59 × 12,042.05
4. Step 4: Simplify right side
   19,595.40x = 325,648,025.49
5. Step 5: Solve for x
   x = 325,648,025.49/19,595.40
6. Step 6: Final answer
   x = 16,618.60