Finding the Fourth Proportional to 22,182.88, 30,617.60 and 12,756.88

Step by Step Solution

1. Step 1: Write the proportion equation
   22,182.88 : 30,617.60 = 12,756.88 : x
2. Step 2: Convert to fraction form
   22,182.88/30,617.60 = 12,756.88/x
3. Step 3: Cross multiply
   22,182.88x = 30,617.60 × 12,756.88
4. Step 4: Simplify right side
   22,182.88x = 390,585,049.09
5. Step 5: Solve for x
   x = 390,585,049.09/22,182.88
6. Step 6: Final answer
   x = 17,607.50