Finding the Fourth Proportional to 22,389.48, 30,895.56 and 12,958.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,389.48 : 30,895.56 = 12,958.56 : x
2. Step 2: Convert to fraction form
   22,389.48/30,895.56 = 12,958.56/x
3. Step 3: Cross multiply
   22,389.48x = 30,895.56 × 12,958.56
4. Step 4: Simplify right side
   22,389.48x = 400,361,967.99
5. Step 5: Solve for x
   x = 400,361,967.99/22,389.48
6. Step 6: Final answer
   x = 17,881.70