Finding the Fourth Proportional to 8,976.94, 12,394.26 and 5,621.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,976.94 : 12,394.26 = 5,621.10 : x
2. Step 2: Convert to fraction form
   8,976.94/12,394.26 = 5,621.10/x
3. Step 3: Cross multiply
   8,976.94x = 12,394.26 × 5,621.10
4. Step 4: Simplify right side
   8,976.94x = 69,669,374.89
5. Step 5: Solve for x
   x = 69,669,374.89/8,976.94
6. Step 6: Final answer
   x = 7,760.93