Finding the Fourth Proportional to 14,339.50, 21,510.06 and 5,105.50

Step by Step Solution

1. Step 1: Write the proportion equation
   14,339.50 : 21,510.06 = 5,105.50 : x
2. Step 2: Convert to fraction form
   14,339.50/21,510.06 = 5,105.50/x
3. Step 3: Cross multiply
   14,339.50x = 21,510.06 × 5,105.50
4. Step 4: Simplify right side
   14,339.50x = 109,819,611.33
5. Step 5: Solve for x
   x = 109,819,611.33/14,339.50
6. Step 6: Final answer
   x = 7,658.54