Finding the Fourth Proportional to 9,404.68, 12,976.90 and 5,425.64

Step by Step Solution

1. Step 1: Write the proportion equation
   9,404.68 : 12,976.90 = 5,425.64 : x
2. Step 2: Convert to fraction form
   9,404.68/12,976.90 = 5,425.64/x
3. Step 3: Cross multiply
   9,404.68x = 12,976.90 × 5,425.64
4. Step 4: Simplify right side
   9,404.68x = 70,407,987.72
5. Step 5: Solve for x
   x = 70,407,987.72/9,404.68
6. Step 6: Final answer
   x = 7,486.48