Finding the Fourth Proportional to 22,389.36, 30,900.33 and 12,958.53

Step by Step Solution

1. Step 1: Write the proportion equation
   22,389.36 : 30,900.33 = 12,958.53 : x
2. Step 2: Convert to fraction form
   22,389.36/30,900.33 = 12,958.53/x
3. Step 3: Cross multiply
   22,389.36x = 30,900.33 × 12,958.53
4. Step 4: Simplify right side
   22,389.36x = 400,422,853.31
5. Step 5: Solve for x
   x = 400,422,853.31/22,389.36
6. Step 6: Final answer
   x = 17,884.52