Finding the Fourth Proportional to 22,389.33, 30,896.60 and 12,317.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,389.33 : 30,896.60 = 12,317.76 : x
2. Step 2: Convert to fraction form
   22,389.33/30,896.60 = 12,317.76/x
3. Step 3: Cross multiply
   22,389.33x = 30,896.60 × 12,317.76
4. Step 4: Simplify right side
   22,389.33x = 380,576,842.03
5. Step 5: Solve for x
   x = 380,576,842.03/22,389.33
6. Step 6: Final answer
   x = 16,998.13