Finding the Fourth Proportional to 13,331.82, 19,996.56 and 12,287.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,331.82 : 19,996.56 = 12,287.82 : x
2. Step 2: Convert to fraction form
   13,331.82/19,996.56 = 12,287.82/x
3. Step 3: Cross multiply
   13,331.82x = 19,996.56 × 12,287.82
4. Step 4: Simplify right side
   13,331.82x = 245,714,129.90
5. Step 5: Solve for x
   x = 245,714,129.90/13,331.82
6. Step 6: Final answer
   x = 18,430.65