Finding the Fourth Proportional to 35,391.72, 53,074.83 and 12,012.69

Step by Step Solution

1. Step 1: Write the proportion equation
   35,391.72 : 53,074.83 = 12,012.69 : x
2. Step 2: Convert to fraction form
   35,391.72/53,074.83 = 12,012.69/x
3. Step 3: Cross multiply
   35,391.72x = 53,074.83 × 12,012.69
4. Step 4: Simplify right side
   35,391.72x = 637,571,479.59
5. Step 5: Solve for x
   x = 637,571,479.59/35,391.72
6. Step 6: Final answer
   x = 18,014.71