Finding the Fourth Proportional to 19,958.52, 27,540.23 and 12,406.08

Step by Step Solution

1. Step 1: Write the proportion equation
   19,958.52 : 27,540.23 = 12,406.08 : x
2. Step 2: Convert to fraction form
   19,958.52/27,540.23 = 12,406.08/x
3. Step 3: Cross multiply
   19,958.52x = 27,540.23 × 12,406.08
4. Step 4: Simplify right side
   19,958.52x = 341,666,234.57
5. Step 5: Solve for x
   x = 341,666,234.57/19,958.52
6. Step 6: Final answer
   x = 17,118.82