Finding the Fourth Proportional to 19,738.89, 27,238.86 and 10,786.71

Step by Step Solution

1. Step 1: Write the proportion equation
   19,738.89 : 27,238.86 = 10,786.71 : x
2. Step 2: Convert to fraction form
   19,738.89/27,238.86 = 10,786.71/x
3. Step 3: Cross multiply
   19,738.89x = 27,238.86 × 10,786.71
4. Step 4: Simplify right side
   19,738.89x = 293,817,683.55
5. Step 5: Solve for x
   x = 293,817,683.55/19,738.89
6. Step 6: Final answer
   x = 14,885.22