Finding the Fourth Proportional to 9,110.28, 12,571.94 and 5,131.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,110.28 : 12,571.94 = 5,131.43 : x
2. Step 2: Convert to fraction form
   9,110.28/12,571.94 = 5,131.43/x
3. Step 3: Cross multiply
   9,110.28x = 12,571.94 × 5,131.43
4. Step 4: Simplify right side
   9,110.28x = 64,511,967.21
5. Step 5: Solve for x
   x = 64,511,967.21/9,110.28
6. Step 6: Final answer
   x = 7,081.23