Finding the Fourth Proportional to 8,144.39, 12,210.71 and 5,505.36

Step by Step Solution

1. Step 1: Write the proportion equation
   8,144.39 : 12,210.71 = 5,505.36 : x
2. Step 2: Convert to fraction form
   8,144.39/12,210.71 = 5,505.36/x
3. Step 3: Cross multiply
   8,144.39x = 12,210.71 × 5,505.36
4. Step 4: Simplify right side
   8,144.39x = 67,224,326.88
5. Step 5: Solve for x
   x = 67,224,326.88/8,144.39
6. Step 6: Final answer
   x = 8,254.07