Finding the Fourth Proportional to 13,828.72, 20,743.12 and 5,063.60

Step by Step Solution

1. Step 1: Write the proportion equation
   13,828.72 : 20,743.12 = 5,063.60 : x
2. Step 2: Convert to fraction form
   13,828.72/20,743.12 = 5,063.60/x
3. Step 3: Cross multiply
   13,828.72x = 20,743.12 × 5,063.60
4. Step 4: Simplify right side
   13,828.72x = 105,034,862.43
5. Step 5: Solve for x
   x = 105,034,862.43/13,828.72
6. Step 6: Final answer
   x = 7,595.41