Finding the Fourth Proportional to 8,145.39, 12,233.13 and 4,878.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,145.39 : 12,233.13 = 4,878.56 : x
2. Step 2: Convert to fraction form
   8,145.39/12,233.13 = 4,878.56/x
3. Step 3: Cross multiply
   8,145.39x = 12,233.13 × 4,878.56
4. Step 4: Simplify right side
   8,145.39x = 59,680,058.69
5. Step 5: Solve for x
   x = 59,680,058.69/8,145.39
6. Step 6: Final answer
   x = 7,326.85