Finding the Fourth Proportional to 13,329.82, 19,993.56 and 12,285.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,329.82 : 19,993.56 = 12,285.82 : x
2. Step 2: Convert to fraction form
   13,329.82/19,993.56 = 12,285.82/x
3. Step 3: Cross multiply
   13,329.82x = 19,993.56 × 12,285.82
4. Step 4: Simplify right side
   13,329.82x = 245,637,279.32
5. Step 5: Solve for x
   x = 245,637,279.32/13,329.82
6. Step 6: Final answer
   x = 18,427.65