Finding the Fourth Proportional to 22,461.30, 30,996.65 and 12,390.41

Step by Step Solution

1. Step 1: Write the proportion equation
   22,461.30 : 30,996.65 = 12,390.41 : x
2. Step 2: Convert to fraction form
   22,461.30/30,996.65 = 12,390.41/x
3. Step 3: Cross multiply
   22,461.30x = 30,996.65 × 12,390.41
4. Step 4: Simplify right side
   22,461.30x = 384,060,985.19
5. Step 5: Solve for x
   x = 384,060,985.19/22,461.30
6. Step 6: Final answer
   x = 17,098.79