Finding the Fourth Proportional to 14,238.27, 19,648.89 and 7,864.67

Step by Step Solution

1. Step 1: Write the proportion equation
   14,238.27 : 19,648.89 = 7,864.67 : x
2. Step 2: Convert to fraction form
   14,238.27/19,648.89 = 7,864.67/x
3. Step 3: Cross multiply
   14,238.27x = 19,648.89 × 7,864.67
4. Step 4: Simplify right side
   14,238.27x = 154,531,937.47
5. Step 5: Solve for x
   x = 154,531,937.47/14,238.27
6. Step 6: Final answer
   x = 10,853.28