Finding the Fourth Proportional to 21,849.50, 30,152.34 and 11,913.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,849.50 : 30,152.34 = 11,913.50 : x
2. Step 2: Convert to fraction form
   21,849.50/30,152.34 = 11,913.50/x
3. Step 3: Cross multiply
   21,849.50x = 30,152.34 × 11,913.50
4. Step 4: Simplify right side
   21,849.50x = 359,219,902.59
5. Step 5: Solve for x
   x = 359,219,902.59/21,849.50
6. Step 6: Final answer
   x = 16,440.65