Finding the Fourth Proportional to 22,456.15, 30,989.73 and 12,384.61

Step by Step Solution

1. Step 1: Write the proportion equation
   22,456.15 : 30,989.73 = 12,384.61 : x
2. Step 2: Convert to fraction form
   22,456.15/30,989.73 = 12,384.61/x
3. Step 3: Cross multiply
   22,456.15x = 30,989.73 × 12,384.61
4. Step 4: Simplify right side
   22,456.15x = 383,795,720.06
5. Step 5: Solve for x
   x = 383,795,720.06/22,456.15
6. Step 6: Final answer
   x = 17,090.90