Finding the Fourth Proportional to 12,287.38, 18,426.86 and 4,889.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,287.38 : 18,426.86 = 4,889.82 : x
2. Step 2: Convert to fraction form
   12,287.38/18,426.86 = 4,889.82/x
3. Step 3: Cross multiply
   12,287.38x = 18,426.86 × 4,889.82
4. Step 4: Simplify right side
   12,287.38x = 90,104,028.57
5. Step 5: Solve for x
   x = 90,104,028.57/12,287.38
6. Step 6: Final answer
   x = 7,333.05