Finding the Fourth Proportional to 13,754.91, 18,981.63 and 7,786.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,754.91 : 18,981.63 = 7,786.56 : x
2. Step 2: Convert to fraction form
   13,754.91/18,981.63 = 7,786.56/x
3. Step 3: Cross multiply
   13,754.91x = 18,981.63 × 7,786.56
4. Step 4: Simplify right side
   13,754.91x = 147,801,600.89
5. Step 5: Solve for x
   x = 147,801,600.89/13,754.91
6. Step 6: Final answer
   x = 10,745.37