Finding the Fourth Proportional to 8,055.81, 12,086.19 and 3,123.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,055.81 : 12,086.19 = 3,123.72 : x
2. Step 2: Convert to fraction form
   8,055.81/12,086.19 = 3,123.72/x
3. Step 3: Cross multiply
   8,055.81x = 12,086.19 × 3,123.72
4. Step 4: Simplify right side
   8,055.81x = 37,753,873.43
5. Step 5: Solve for x
   x = 37,753,873.43/8,055.81
6. Step 6: Final answer
   x = 4,686.54