Finding the Fourth Proportional to 13,196.54, 18,206.24 and 8,159.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,196.54 : 18,206.24 = 8,159.15 : x
2. Step 2: Convert to fraction form
   13,196.54/18,206.24 = 8,159.15/x
3. Step 3: Cross multiply
   13,196.54x = 18,206.24 × 8,159.15
4. Step 4: Simplify right side
   13,196.54x = 148,547,447.82
5. Step 5: Solve for x
   x = 148,547,447.82/13,196.54
6. Step 6: Final answer
   x = 11,256.54