Finding the Fourth Proportional to 22,748.31, 31,356.32 and 15,179.67

Step by Step Solution

1. Step 1: Write the proportion equation
   22,748.31 : 31,356.32 = 15,179.67 : x
2. Step 2: Convert to fraction form
   22,748.31/31,356.32 = 15,179.67/x
3. Step 3: Cross multiply
   22,748.31x = 31,356.32 × 15,179.67
4. Step 4: Simplify right side
   22,748.31x = 475,978,514.12
5. Step 5: Solve for x
   x = 475,978,514.12/22,748.31
6. Step 6: Final answer
   x = 20,923.69