Finding the Fourth Proportional to 13,748.58, 20,608.78 and 5,425.23

Step by Step Solution

1. Step 1: Write the proportion equation
   13,748.58 : 20,608.78 = 5,425.23 : x
2. Step 2: Convert to fraction form
   13,748.58/20,608.78 = 5,425.23/x
3. Step 3: Cross multiply
   13,748.58x = 20,608.78 × 5,425.23
4. Step 4: Simplify right side
   13,748.58x = 111,807,371.52
5. Step 5: Solve for x
   x = 111,807,371.52/13,748.58
6. Step 6: Final answer
   x = 8,132.29