Finding the Fourth Proportional to 22,455.30, 30,988.54 and 12,384.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,455.30 : 30,988.54 = 12,384.15 : x
2. Step 2: Convert to fraction form
   22,455.30/30,988.54 = 12,384.15/x
3. Step 3: Cross multiply
   22,455.30x = 30,988.54 × 12,384.15
4. Step 4: Simplify right side
   22,455.30x = 383,766,665.72
5. Step 5: Solve for x
   x = 383,766,665.72/22,455.30
6. Step 6: Final answer
   x = 17,090.25