Finding the Fourth Proportional to 13,976.27, 19,288.19 and 7,689.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,976.27 : 19,288.19 = 7,689.05 : x
2. Step 2: Convert to fraction form
   13,976.27/19,288.19 = 7,689.05/x
3. Step 3: Cross multiply
   13,976.27x = 19,288.19 × 7,689.05
4. Step 4: Simplify right side
   13,976.27x = 148,307,857.32
5. Step 5: Solve for x
   x = 148,307,857.32/13,976.27
6. Step 6: Final answer
   x = 10,611.40