Finding the Fourth Proportional to 22,563.75, 31,128.18 and 13,606.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,563.75 : 31,128.18 = 13,606.28 : x
2. Step 2: Convert to fraction form
   22,563.75/31,128.18 = 13,606.28/x
3. Step 3: Cross multiply
   22,563.75x = 31,128.18 × 13,606.28
4. Step 4: Simplify right side
   22,563.75x = 423,538,719.57
5. Step 5: Solve for x
   x = 423,538,719.57/22,563.75
6. Step 6: Final answer
   x = 18,770.76