Finding the Fourth Proportional to 22,460.79, 30,996.06 and 12,389.61

Step by Step Solution

1. Step 1: Write the proportion equation
   22,460.79 : 30,996.06 = 12,389.61 : x
2. Step 2: Convert to fraction form
   22,460.79/30,996.06 = 12,389.61/x
3. Step 3: Cross multiply
   22,460.79x = 30,996.06 × 12,389.61
4. Step 4: Simplify right side
   22,460.79x = 384,029,094.94
5. Step 5: Solve for x
   x = 384,029,094.94/22,460.79
6. Step 6: Final answer
   x = 17,097.76