Finding the Fourth Proportional to 22,167.48, 30,591.90 and 12,734.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,167.48 : 30,591.90 = 12,734.28 : x
2. Step 2: Convert to fraction form
   22,167.48/30,591.90 = 12,734.28/x
3. Step 3: Cross multiply
   22,167.48x = 30,591.90 × 12,734.28
4. Step 4: Simplify right side
   22,167.48x = 389,565,820.33
5. Step 5: Solve for x
   x = 389,565,820.33/22,167.48
6. Step 6: Final answer
   x = 17,573.75