Finding the Fourth Proportional to 8,185.76, 12,279.24 and 3,501.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,185.76 : 12,279.24 = 3,501.20 : x
2. Step 2: Convert to fraction form
   8,185.76/12,279.24 = 3,501.20/x
3. Step 3: Cross multiply
   8,185.76x = 12,279.24 × 3,501.20
4. Step 4: Simplify right side
   8,185.76x = 42,992,075.09
5. Step 5: Solve for x
   x = 42,992,075.09/8,185.76
6. Step 6: Final answer
   x = 5,252.06