Finding the Fourth Proportional to 12,009.87, 18,026.42 and 5,774.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,009.87 : 18,026.42 = 5,774.18 : x
2. Step 2: Convert to fraction form
   12,009.87/18,026.42 = 5,774.18/x
3. Step 3: Cross multiply
   12,009.87x = 18,026.42 × 5,774.18
4. Step 4: Simplify right side
   12,009.87x = 104,087,764.96
5. Step 5: Solve for x
   x = 104,087,764.96/12,009.87
6. Step 6: Final answer
   x = 8,666.86