Finding the Fourth Proportional to 21,849.42, 30,152.16 and 11,913.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,849.42 : 30,152.16 = 11,913.42 : x
2. Step 2: Convert to fraction form
   21,849.42/30,152.16 = 11,913.42/x
3. Step 3: Cross multiply
   21,849.42x = 30,152.16 × 11,913.42
4. Step 4: Simplify right side
   21,849.42x = 359,215,345.99
5. Step 5: Solve for x
   x = 359,215,345.99/21,849.42
6. Step 6: Final answer
   x = 16,440.50