Finding the Fourth Proportional to 36,568.73, 54,857.61 and 12,870.69

Step by Step Solution

1. Step 1: Write the proportion equation
   36,568.73 : 54,857.61 = 12,870.69 : x
2. Step 2: Convert to fraction form
   36,568.73/54,857.61 = 12,870.69/x
3. Step 3: Cross multiply
   36,568.73x = 54,857.61 × 12,870.69
4. Step 4: Simplify right side
   36,568.73x = 706,055,292.45
5. Step 5: Solve for x
   x = 706,055,292.45/36,568.73
6. Step 6: Final answer
   x = 19,307.63