Finding the Fourth Proportional to 9,074.40, 12,517.23 and 5,711.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,074.40 : 12,517.23 = 5,711.37 : x
2. Step 2: Convert to fraction form
   9,074.40/12,517.23 = 5,711.37/x
3. Step 3: Cross multiply
   9,074.40x = 12,517.23 × 5,711.37
4. Step 4: Simplify right side
   9,074.40x = 71,490,553.32
5. Step 5: Solve for x
   x = 71,490,553.32/9,074.40
6. Step 6: Final answer
   x = 7,878.27