Finding the Fourth Proportional to 13,976.27, 19,287.18 and 7,760.29

Step by Step Solution

1. Step 1: Write the proportion equation
   13,976.27 : 19,287.18 = 7,760.29 : x
2. Step 2: Convert to fraction form
   13,976.27/19,287.18 = 7,760.29/x
3. Step 3: Cross multiply
   13,976.27x = 19,287.18 × 7,760.29
4. Step 4: Simplify right side
   13,976.27x = 149,674,013.65
5. Step 5: Solve for x
   x = 149,674,013.65/13,976.27
6. Step 6: Final answer
   x = 10,709.16