Finding the Fourth Proportional to 10,207.78, 14,087.55 and 5,731.83

Step by Step Solution

1. Step 1: Write the proportion equation
   10,207.78 : 14,087.55 = 5,731.83 : x
2. Step 2: Convert to fraction form
   10,207.78/14,087.55 = 5,731.83/x
3. Step 3: Cross multiply
   10,207.78x = 14,087.55 × 5,731.83
4. Step 4: Simplify right side
   10,207.78x = 80,747,441.72
5. Step 5: Solve for x
   x = 80,747,441.72/10,207.78
6. Step 6: Final answer
   x = 7,910.38