Finding the Fourth Proportional to 9,358.73, 12,914.07 and 5,380.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,358.73 : 12,914.07 = 5,380.42 : x
2. Step 2: Convert to fraction form
   9,358.73/12,914.07 = 5,380.42/x
3. Step 3: Cross multiply
   9,358.73x = 12,914.07 × 5,380.42
4. Step 4: Simplify right side
   9,358.73x = 69,483,055.94
5. Step 5: Solve for x
   x = 69,483,055.94/9,358.73
6. Step 6: Final answer
   x = 7,424.41