Finding the Fourth Proportional to 21,856.93, 30,162.23 and 12,296.09

Step by Step Solution

1. Step 1: Write the proportion equation
   21,856.93 : 30,162.23 = 12,296.09 : x
2. Step 2: Convert to fraction form
   21,856.93/30,162.23 = 12,296.09/x
3. Step 3: Cross multiply
   21,856.93x = 30,162.23 × 12,296.09
4. Step 4: Simplify right side
   21,856.93x = 370,877,494.68
5. Step 5: Solve for x
   x = 370,877,494.68/21,856.93
6. Step 6: Final answer
   x = 16,968.42