Finding the Fourth Proportional to 12,662.16, 18,978.06 and 5,898.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,662.16 : 18,978.06 = 5,898.62 : x
2. Step 2: Convert to fraction form
   12,662.16/18,978.06 = 5,898.62/x
3. Step 3: Cross multiply
   12,662.16x = 18,978.06 × 5,898.62
4. Step 4: Simplify right side
   12,662.16x = 111,944,433.84
5. Step 5: Solve for x
   x = 111,944,433.84/12,662.16
6. Step 6: Final answer
   x = 8,840.87