Finding the Fourth Proportional to 14,238.56, 19,648.50 and 7,949.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,238.56 : 19,648.50 = 7,949.72 : x
2. Step 2: Convert to fraction form
   14,238.56/19,648.50 = 7,949.72/x
3. Step 3: Cross multiply
   14,238.56x = 19,648.50 × 7,949.72
4. Step 4: Simplify right side
   14,238.56x = 156,200,073.42
5. Step 5: Solve for x
   x = 156,200,073.42/14,238.56
6. Step 6: Final answer
   x = 10,970.22