Finding the Fourth Proportional to 22,180.50, 30,610.31 and 12,749.67

Step by Step Solution

1. Step 1: Write the proportion equation
   22,180.50 : 30,610.31 = 12,749.67 : x
2. Step 2: Convert to fraction form
   22,180.50/30,610.31 = 12,749.67/x
3. Step 3: Cross multiply
   22,180.50x = 30,610.31 × 12,749.67
4. Step 4: Simplify right side
   22,180.50x = 390,271,287.35
5. Step 5: Solve for x
   x = 390,271,287.35/22,180.50
6. Step 6: Final answer
   x = 17,595.24