Finding the Fourth Proportional to 16,447.33, 24,700.69 and 15,128.67

Step by Step Solution

1. Step 1: Write the proportion equation
   16,447.33 : 24,700.69 = 15,128.67 : x
2. Step 2: Convert to fraction form
   16,447.33/24,700.69 = 15,128.67/x
3. Step 3: Cross multiply
   16,447.33x = 24,700.69 × 15,128.67
4. Step 4: Simplify right side
   16,447.33x = 373,688,587.78
5. Step 5: Solve for x
   x = 373,688,587.78/16,447.33
6. Step 6: Final answer
   x = 22,720.32