Finding the Fourth Proportional to 37,217.16, 55,833.42 and 12,258.72

Step by Step Solution

1. Step 1: Write the proportion equation
   37,217.16 : 55,833.42 = 12,258.72 : x
2. Step 2: Convert to fraction form
   37,217.16/55,833.42 = 12,258.72/x
3. Step 3: Cross multiply
   37,217.16x = 55,833.42 × 12,258.72
4. Step 4: Simplify right side
   37,217.16x = 684,446,262.42
5. Step 5: Solve for x
   x = 684,446,262.42/37,217.16
6. Step 6: Final answer
   x = 18,390.61