Finding the Fourth Proportional to 10,245.75, 14,139.39 and 5,769.67

Step by Step Solution

1. Step 1: Write the proportion equation
   10,245.75 : 14,139.39 = 5,769.67 : x
2. Step 2: Convert to fraction form
   10,245.75/14,139.39 = 5,769.67/x
3. Step 3: Cross multiply
   10,245.75x = 14,139.39 × 5,769.67
4. Step 4: Simplify right side
   10,245.75x = 81,579,614.30
5. Step 5: Solve for x
   x = 81,579,614.30/10,245.75
6. Step 6: Final answer
   x = 7,962.29