Finding the Fourth Proportional to 9,404.91, 12,975.80 and 5,425.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,404.91 : 12,975.80 = 5,425.47 : x
2. Step 2: Convert to fraction form
   9,404.91/12,975.80 = 5,425.47/x
3. Step 3: Cross multiply
   9,404.91x = 12,975.80 × 5,425.47
4. Step 4: Simplify right side
   9,404.91x = 70,399,786.50
5. Step 5: Solve for x
   x = 70,399,786.50/9,404.91
6. Step 6: Final answer
   x = 7,485.43