Finding the Fourth Proportional to 13,968.48, 20,939.76 and 5,196.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,968.48 : 20,939.76 = 5,196.96 : x
2. Step 2: Convert to fraction form
   13,968.48/20,939.76 = 5,196.96/x
3. Step 3: Cross multiply
   13,968.48x = 20,939.76 × 5,196.96
4. Step 4: Simplify right side
   13,968.48x = 108,823,095.13
5. Step 5: Solve for x
   x = 108,823,095.13/13,968.48
6. Step 6: Final answer
   x = 7,790.62