Finding the Fourth Proportional to 20,769.84, 31,139.10 and 10,763.82

Step by Step Solution

1. Step 1: Write the proportion equation
   20,769.84 : 31,139.10 = 10,763.82 : x
2. Step 2: Convert to fraction form
   20,769.84/31,139.10 = 10,763.82/x
3. Step 3: Cross multiply
   20,769.84x = 31,139.10 × 10,763.82
4. Step 4: Simplify right side
   20,769.84x = 335,175,667.36
5. Step 5: Solve for x
   x = 335,175,667.36/20,769.84
6. Step 6: Final answer
   x = 16,137.61