Finding the Fourth Proportional to 14,288.50, 21,429.56 and 4,928.14

Step by Step Solution

1. Step 1: Write the proportion equation
   14,288.50 : 21,429.56 = 4,928.14 : x
2. Step 2: Convert to fraction form
   14,288.50/21,429.56 = 4,928.14/x
3. Step 3: Cross multiply
   14,288.50x = 21,429.56 × 4,928.14
4. Step 4: Simplify right side
   14,288.50x = 105,607,910.93
5. Step 5: Solve for x
   x = 105,607,910.93/14,288.50
6. Step 6: Final answer
   x = 7,391.11