Finding the Fourth Proportional to 21,757.61, 30,023.46 and 12,326.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,757.61 : 30,023.46 = 12,326.18 : x
2. Step 2: Convert to fraction form
   21,757.61/30,023.46 = 12,326.18/x
3. Step 3: Cross multiply
   21,757.61x = 30,023.46 × 12,326.18
4. Step 4: Simplify right side
   21,757.61x = 370,074,422.07
5. Step 5: Solve for x
   x = 370,074,422.07/21,757.61
6. Step 6: Final answer
   x = 17,008.96