Finding the Fourth Proportional to 10,926.75, 16,389.69 and 3,135.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,926.75 : 16,389.69 = 3,135.57 : x
2. Step 2: Convert to fraction form
   10,926.75/16,389.69 = 3,135.57/x
3. Step 3: Cross multiply
   10,926.75x = 16,389.69 × 3,135.57
4. Step 4: Simplify right side
   10,926.75x = 51,391,020.27
5. Step 5: Solve for x
   x = 51,391,020.27/10,926.75
6. Step 6: Final answer
   x = 4,703.23