Finding the Fourth Proportional to 8,054.64, 12,078.54 and 3,123.36

Step by Step Solution

1. Step 1: Write the proportion equation
   8,054.64 : 12,078.54 = 3,123.36 : x
2. Step 2: Convert to fraction form
   8,054.64/12,078.54 = 3,123.36/x
3. Step 3: Cross multiply
   8,054.64x = 12,078.54 × 3,123.36
4. Step 4: Simplify right side
   8,054.64x = 37,725,628.69
5. Step 5: Solve for x
   x = 37,725,628.69/8,054.64
6. Step 6: Final answer
   x = 4,683.71