Finding the Fourth Proportional to 12,993.12, 19,436.16 and 10,804.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,993.12 : 19,436.16 = 10,804.80 : x
2. Step 2: Convert to fraction form
   12,993.12/19,436.16 = 10,804.80/x
3. Step 3: Cross multiply
   12,993.12x = 19,436.16 × 10,804.80
4. Step 4: Simplify right side
   12,993.12x = 210,003,821.57
5. Step 5: Solve for x
   x = 210,003,821.57/12,993.12
6. Step 6: Final answer
   x = 16,162.69