Finding the Fourth Proportional to 8,127.39, 12,185.82 and 5,345.64

Step by Step Solution

1. Step 1: Write the proportion equation
   8,127.39 : 12,185.82 = 5,345.64 : x
2. Step 2: Convert to fraction form
   8,127.39/12,185.82 = 5,345.64/x
3. Step 3: Cross multiply
   8,127.39x = 12,185.82 × 5,345.64
4. Step 4: Simplify right side
   8,127.39x = 65,141,006.82
5. Step 5: Solve for x
   x = 65,141,006.82/8,127.39
6. Step 6: Final answer
   x = 8,015.00