Finding the Fourth Proportional to 9,399.14, 12,970.78 and 5,150.46

Step by Step Solution

1. Step 1: Write the proportion equation
   9,399.14 : 12,970.78 = 5,150.46 : x
2. Step 2: Convert to fraction form
   9,399.14/12,970.78 = 5,150.46/x
3. Step 3: Cross multiply
   9,399.14x = 12,970.78 × 5,150.46
4. Step 4: Simplify right side
   9,399.14x = 66,805,483.56
5. Step 5: Solve for x
   x = 66,805,483.56/9,399.14
6. Step 6: Final answer
   x = 7,107.62