Finding the Fourth Proportional to 8,127.36, 12,188.16 and 3,507.84

Step by Step Solution

1. Step 1: Write the proportion equation
   8,127.36 : 12,188.16 = 3,507.84 : x
2. Step 2: Convert to fraction form
   8,127.36/12,188.16 = 3,507.84/x
3. Step 3: Cross multiply
   8,127.36x = 12,188.16 × 3,507.84
4. Step 4: Simplify right side
   8,127.36x = 42,754,115.17
5. Step 5: Solve for x
   x = 42,754,115.17/8,127.36
6. Step 6: Final answer
   x = 5,260.52