Finding the Fourth Proportional to 8,976.94, 12,389.34 and 5,150.07

Step by Step Solution

1. Step 1: Write the proportion equation
   8,976.94 : 12,389.34 = 5,150.07 : x
2. Step 2: Convert to fraction form
   8,976.94/12,389.34 = 5,150.07/x
3. Step 3: Cross multiply
   8,976.94x = 12,389.34 × 5,150.07
4. Step 4: Simplify right side
   8,976.94x = 63,805,968.25
5. Step 5: Solve for x
   x = 63,805,968.25/8,976.94
6. Step 6: Final answer
   x = 7,107.76