Finding the Fourth Proportional to 19,993.86, 27,582.30 and 12,922.56

Step by Step Solution

1. Step 1: Write the proportion equation
   19,993.86 : 27,582.30 = 12,922.56 : x
2. Step 2: Convert to fraction form
   19,993.86/27,582.30 = 12,922.56/x
3. Step 3: Cross multiply
   19,993.86x = 27,582.30 × 12,922.56
4. Step 4: Simplify right side
   19,993.86x = 356,433,926.69
5. Step 5: Solve for x
   x = 356,433,926.69/19,993.86
6. Step 6: Final answer
   x = 17,827.17