Finding the Fourth Proportional to 13,164.28, 19,733.12 and 5,672.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,164.28 : 19,733.12 = 5,672.72 : x
2. Step 2: Convert to fraction form
   13,164.28/19,733.12 = 5,672.72/x
3. Step 3: Cross multiply
   13,164.28x = 19,733.12 × 5,672.72
4. Step 4: Simplify right side
   13,164.28x = 111,940,464.49
5. Step 5: Solve for x
   x = 111,940,464.49/13,164.28
6. Step 6: Final answer
   x = 8,503.35