Finding the Fourth Proportional to 13,748.78, 20,608.59 and 5,958.20

Step by Step Solution

1. Step 1: Write the proportion equation
   13,748.78 : 20,608.59 = 5,958.20 : x
2. Step 2: Convert to fraction form
   13,748.78/20,608.59 = 5,958.20/x
3. Step 3: Cross multiply
   13,748.78x = 20,608.59 × 5,958.20
4. Step 4: Simplify right side
   13,748.78x = 122,790,100.94
5. Step 5: Solve for x
   x = 122,790,100.94/13,748.78
6. Step 6: Final answer
   x = 8,930.98