Finding the Fourth Proportional to 13,976.94, 19,288.17 and 7,689.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,976.94 : 19,288.17 = 7,689.27 : x
2. Step 2: Convert to fraction form
   13,976.94/19,288.17 = 7,689.27/x
3. Step 3: Cross multiply
   13,976.94x = 19,288.17 × 7,689.27
4. Step 4: Simplify right side
   13,976.94x = 148,311,946.94
5. Step 5: Solve for x
   x = 148,311,946.94/13,976.94
6. Step 6: Final answer
   x = 10,611.19