Finding the Fourth Proportional to 22,460.90, 30,997.89 and 12,390.27

Step by Step Solution

1. Step 1: Write the proportion equation
   22,460.90 : 30,997.89 = 12,390.27 : x
2. Step 2: Convert to fraction form
   22,460.90/30,997.89 = 12,390.27/x
3. Step 3: Cross multiply
   22,460.90x = 30,997.89 × 12,390.27
4. Step 4: Simplify right side
   22,460.90x = 384,072,110.29
5. Step 5: Solve for x
   x = 384,072,110.29/22,460.90
6. Step 6: Final answer
   x = 17,099.59