Finding the Fourth Proportional to 13,309.02, 19,965.33 and 10,540.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,309.02 : 19,965.33 = 10,540.83 : x
2. Step 2: Convert to fraction form
   13,309.02/19,965.33 = 10,540.83/x
3. Step 3: Cross multiply
   13,309.02x = 19,965.33 × 10,540.83
4. Step 4: Simplify right side
   13,309.02x = 210,451,149.42
5. Step 5: Solve for x
   x = 210,451,149.42/13,309.02
6. Step 6: Final answer
   x = 15,812.67