Finding the Fourth Proportional to 22,520.58, 31,077.42 and 12,448.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,520.58 : 31,077.42 = 12,448.50 : x
2. Step 2: Convert to fraction form
   22,520.58/31,077.42 = 12,448.50/x
3. Step 3: Cross multiply
   22,520.58x = 31,077.42 × 12,448.50
4. Step 4: Simplify right side
   22,520.58x = 386,867,262.87
5. Step 5: Solve for x
   x = 386,867,262.87/22,520.58
6. Step 6: Final answer
   x = 17,178.39