Finding the Fourth Proportional to 35,906.02, 53,867.76 and 12,215.14

Step by Step Solution

1. Step 1: Write the proportion equation
   35,906.02 : 53,867.76 = 12,215.14 : x
2. Step 2: Convert to fraction form
   35,906.02/53,867.76 = 12,215.14/x
3. Step 3: Cross multiply
   35,906.02x = 53,867.76 × 12,215.14
4. Step 4: Simplify right side
   35,906.02x = 658,002,229.89
5. Step 5: Solve for x
   x = 658,002,229.89/35,906.02
6. Step 6: Final answer
   x = 18,325.68