Finding the Fourth Proportional to 22,695.76, 31,317.72 and 12,622.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,695.76 : 31,317.72 = 12,622.56 : x
2. Step 2: Convert to fraction form
   22,695.76/31,317.72 = 12,622.56/x
3. Step 3: Cross multiply
   22,695.76x = 31,317.72 × 12,622.56
4. Step 4: Simplify right side
   22,695.76x = 395,309,799.76
5. Step 5: Solve for x
   x = 395,309,799.76/22,695.76
6. Step 6: Final answer
   x = 17,417.78