Finding the Fourth Proportional to 9,057.78, 13,581.96 and 5,361.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,057.78 : 13,581.96 = 5,361.18 : x
2. Step 2: Convert to fraction form
   9,057.78/13,581.96 = 5,361.18/x
3. Step 3: Cross multiply
   9,057.78x = 13,581.96 × 5,361.18
4. Step 4: Simplify right side
   9,057.78x = 72,815,332.31
5. Step 5: Solve for x
   x = 72,815,332.31/9,057.78
6. Step 6: Final answer
   x = 8,038.98