Finding the Fourth Proportional to 8,084.77, 12,122.55 and 3,148.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,084.77 : 12,122.55 = 3,148.72 : x
2. Step 2: Convert to fraction form
   8,084.77/12,122.55 = 3,148.72/x
3. Step 3: Cross multiply
   8,084.77x = 12,122.55 × 3,148.72
4. Step 4: Simplify right side
   8,084.77x = 38,170,485.33
5. Step 5: Solve for x
   x = 38,170,485.33/8,084.77
6. Step 6: Final answer
   x = 4,721.28