Finding the Fourth Proportional to 22,460.20, 30,995.28 and 12,389.02

Step by Step Solution

1. Step 1: Write the proportion equation
   22,460.20 : 30,995.28 = 12,389.02 : x
2. Step 2: Convert to fraction form
   22,460.20/30,995.28 = 12,389.02/x
3. Step 3: Cross multiply
   22,460.20x = 30,995.28 × 12,389.02
4. Step 4: Simplify right side
   22,460.20x = 384,001,143.83
5. Step 5: Solve for x
   x = 384,001,143.83/22,460.20
6. Step 6: Final answer
   x = 17,096.96