Finding the Fourth Proportional to 22,455.74, 30,989.58 and 12,384.47

Step by Step Solution

1. Step 1: Write the proportion equation
   22,455.74 : 30,989.58 = 12,384.47 : x
2. Step 2: Convert to fraction form
   22,455.74/30,989.58 = 12,384.47/x
3. Step 3: Cross multiply
   22,455.74x = 30,989.58 × 12,384.47
4. Step 4: Simplify right side
   22,455.74x = 383,789,523.82
5. Step 5: Solve for x
   x = 383,789,523.82/22,455.74
6. Step 6: Final answer
   x = 17,090.93