Finding the Fourth Proportional to 22,393.02, 30,902.81 and 12,967.05

Step by Step Solution

1. Step 1: Write the proportion equation
   22,393.02 : 30,902.81 = 12,967.05 : x
2. Step 2: Convert to fraction form
   22,393.02/30,902.81 = 12,967.05/x
3. Step 3: Cross multiply
   22,393.02x = 30,902.81 × 12,967.05
4. Step 4: Simplify right side
   22,393.02x = 400,718,282.41
5. Step 5: Solve for x
   x = 400,718,282.41/22,393.02
6. Step 6: Final answer
   x = 17,894.79