Finding the Fourth Proportional to 12,015.91, 18,027.71 and 5,776.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,015.91 : 18,027.71 = 5,776.37 : x
2. Step 2: Convert to fraction form
   12,015.91/18,027.71 = 5,776.37/x
3. Step 3: Cross multiply
   12,015.91x = 18,027.71 × 5,776.37
4. Step 4: Simplify right side
   12,015.91x = 104,134,827.36
5. Step 5: Solve for x
   x = 104,134,827.36/12,015.91
6. Step 6: Final answer
   x = 8,666.42