Finding the Fourth Proportional to 21,819.69, 30,111.18 and 11,883.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,819.69 : 30,111.18 = 11,883.69 : x
2. Step 2: Convert to fraction form
   21,819.69/30,111.18 = 11,883.69/x
3. Step 3: Cross multiply
   21,819.69x = 30,111.18 × 11,883.69
4. Step 4: Simplify right side
   21,819.69x = 357,831,869.24
5. Step 5: Solve for x
   x = 357,831,869.24/21,819.69
6. Step 6: Final answer
   x = 16,399.49