Finding the Fourth Proportional to 9,057.42, 12,493.93 and 5,694.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,057.42 : 12,493.93 = 5,694.90 : x
2. Step 2: Convert to fraction form
   9,057.42/12,493.93 = 5,694.90/x
3. Step 3: Cross multiply
   9,057.42x = 12,493.93 × 5,694.90
4. Step 4: Simplify right side
   9,057.42x = 71,151,653.48
5. Step 5: Solve for x
   x = 71,151,653.48/9,057.42
6. Step 6: Final answer
   x = 7,855.62