Finding the Fourth Proportional to 22,647.76, 31,253.90 and 13,214.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,647.76 : 31,253.90 = 13,214.50 : x
2. Step 2: Convert to fraction form
   22,647.76/31,253.90 = 13,214.50/x
3. Step 3: Cross multiply
   22,647.76x = 31,253.90 × 13,214.50
4. Step 4: Simplify right side
   22,647.76x = 413,004,661.55
5. Step 5: Solve for x
   x = 413,004,661.55/22,647.76
6. Step 6: Final answer
   x = 18,236.00