Finding the Fourth Proportional to 8,736.28, 12,055.40 and 5,198.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,736.28 : 12,055.40 = 5,198.82 : x
2. Step 2: Convert to fraction form
   8,736.28/12,055.40 = 5,198.82/x
3. Step 3: Cross multiply
   8,736.28x = 12,055.40 × 5,198.82
4. Step 4: Simplify right side
   8,736.28x = 62,673,854.63
5. Step 5: Solve for x
   x = 62,673,854.63/8,736.28
6. Step 6: Final answer
   x = 7,173.98