Finding the Fourth Proportional to 14,391.33, 19,869.83 and 9,015.99

Step by Step Solution

1. Step 1: Write the proportion equation
   14,391.33 : 19,869.83 = 9,015.99 : x
2. Step 2: Convert to fraction form
   14,391.33/19,869.83 = 9,015.99/x
3. Step 3: Cross multiply
   14,391.33x = 19,869.83 × 9,015.99
4. Step 4: Simplify right side
   14,391.33x = 179,146,143.50
5. Step 5: Solve for x
   x = 179,146,143.50/14,391.33
6. Step 6: Final answer
   x = 12,448.20