Finding the Fourth Proportional to 22,455.31, 30,987.61 and 12,384.18

Step by Step Solution

1. Step 1: Write the proportion equation
   22,455.31 : 30,987.61 = 12,384.18 : x
2. Step 2: Convert to fraction form
   22,455.31/30,987.61 = 12,384.18/x
3. Step 3: Cross multiply
   22,455.31x = 30,987.61 × 12,384.18
4. Step 4: Simplify right side
   22,455.31x = 383,756,140.01
5. Step 5: Solve for x
   x = 383,756,140.01/22,455.31
6. Step 6: Final answer
   x = 17,089.77