Finding the Fourth Proportional to 8,178.03, 12,271.91 and 3,499.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,178.03 : 12,271.91 = 3,499.47 : x
2. Step 2: Convert to fraction form
   8,178.03/12,271.91 = 3,499.47/x
3. Step 3: Cross multiply
   8,178.03x = 12,271.91 × 3,499.47
4. Step 4: Simplify right side
   8,178.03x = 42,945,163.39
5. Step 5: Solve for x
   x = 42,945,163.39/8,178.03
6. Step 6: Final answer
   x = 5,251.28