Finding the Fourth Proportional to 10,571.10, 15,850.89 and 5,381.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,571.10 : 15,850.89 = 5,381.34 : x
2. Step 2: Convert to fraction form
   10,571.10/15,850.89 = 5,381.34/x
3. Step 3: Cross multiply
   10,571.10x = 15,850.89 × 5,381.34
4. Step 4: Simplify right side
   10,571.10x = 85,299,028.39
5. Step 5: Solve for x
   x = 85,299,028.39/10,571.10
6. Step 6: Final answer
   x = 8,069.08