Finding the Fourth Proportional to 8,123.16, 12,182.22 and 2,928.36

Step by Step Solution

1. Step 1: Write the proportion equation
   8,123.16 : 12,182.22 = 2,928.36 : x
2. Step 2: Convert to fraction form
   8,123.16/12,182.22 = 2,928.36/x
3. Step 3: Cross multiply
   8,123.16x = 12,182.22 × 2,928.36
4. Step 4: Simplify right side
   8,123.16x = 35,673,925.76
5. Step 5: Solve for x
   x = 35,673,925.76/8,123.16
6. Step 6: Final answer
   x = 4,391.63