Finding the Fourth Proportional to 9,290.72, 13,923.42 and 5,124.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,290.72 : 13,923.42 = 5,124.47 : x
2. Step 2: Convert to fraction form
   9,290.72/13,923.42 = 5,124.47/x
3. Step 3: Cross multiply
   9,290.72x = 13,923.42 × 5,124.47
4. Step 4: Simplify right side
   9,290.72x = 71,350,148.09
5. Step 5: Solve for x
   x = 71,350,148.09/9,290.72
6. Step 6: Final answer
   x = 7,679.72