Finding the Fourth Proportional to 10,486.89, 14,471.90 and 5,771.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,486.89 : 14,471.90 = 5,771.18 : x
2. Step 2: Convert to fraction form
   10,486.89/14,471.90 = 5,771.18/x
3. Step 3: Cross multiply
   10,486.89x = 14,471.90 × 5,771.18
4. Step 4: Simplify right side
   10,486.89x = 83,519,867.48
5. Step 5: Solve for x
   x = 83,519,867.48/10,486.89
6. Step 6: Final answer
   x = 7,964.22