Finding the Fourth Proportional to 13,091.92, 19,638.48 and 5,196.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,091.92 : 19,638.48 = 5,196.04 : x
2. Step 2: Convert to fraction form
   13,091.92/19,638.48 = 5,196.04/x
3. Step 3: Cross multiply
   13,091.92x = 19,638.48 × 5,196.04
4. Step 4: Simplify right side
   13,091.92x = 102,042,327.62
5. Step 5: Solve for x
   x = 102,042,327.62/13,091.92
6. Step 6: Final answer
   x = 7,794.30