Finding the Fourth Proportional to 12,309.63, 16,981.80 and 7,270.41

Step by Step Solution

1. Step 1: Write the proportion equation
   12,309.63 : 16,981.80 = 7,270.41 : x
2. Step 2: Convert to fraction form
   12,309.63/16,981.80 = 7,270.41/x
3. Step 3: Cross multiply
   12,309.63x = 16,981.80 × 7,270.41
4. Step 4: Simplify right side
   12,309.63x = 123,464,648.54
5. Step 5: Solve for x
   x = 123,464,648.54/12,309.63
6. Step 6: Final answer
   x = 10,029.92