Finding the Fourth Proportional to 22,760.50, 31,409.49 and 12,824.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,760.50 : 31,409.49 = 12,824.50 : x
2. Step 2: Convert to fraction form
   22,760.50/31,409.49 = 12,824.50/x
3. Step 3: Cross multiply
   22,760.50x = 31,409.49 × 12,824.50
4. Step 4: Simplify right side
   22,760.50x = 402,811,004.51
5. Step 5: Solve for x
   x = 402,811,004.51/22,760.50
6. Step 6: Final answer
   x = 17,697.81