Finding the Fourth Proportional to 13,164.32, 18,166.77 and 7,196.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,164.32 : 18,166.77 = 7,196.09 : x
2. Step 2: Convert to fraction form
   13,164.32/18,166.77 = 7,196.09/x
3. Step 3: Cross multiply
   13,164.32x = 18,166.77 × 7,196.09
4. Step 4: Simplify right side
   13,164.32x = 130,729,621.10
5. Step 5: Solve for x
   x = 130,729,621.10/13,164.32
6. Step 6: Final answer
   x = 9,930.61