Finding the Fourth Proportional to 9,036.50, 12,469.65 and 5,057.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,036.50 : 12,469.65 = 5,057.42 : x
2. Step 2: Convert to fraction form
   9,036.50/12,469.65 = 5,057.42/x
3. Step 3: Cross multiply
   9,036.50x = 12,469.65 × 5,057.42
4. Step 4: Simplify right side
   9,036.50x = 63,064,257.30
5. Step 5: Solve for x
   x = 63,064,257.30/9,036.50
6. Step 6: Final answer
   x = 6,978.84