Finding the Fourth Proportional to 43,570.50, 65,356.56 and 12,406.56

Step by Step Solution

1. Step 1: Write the proportion equation
   43,570.50 : 65,356.56 = 12,406.56 : x
2. Step 2: Convert to fraction form
   43,570.50/65,356.56 = 12,406.56/x
3. Step 3: Cross multiply
   43,570.50x = 65,356.56 × 12,406.56
4. Step 4: Simplify right side
   43,570.50x = 810,850,083.03
5. Step 5: Solve for x
   x = 810,850,083.03/43,570.50
6. Step 6: Final answer
   x = 18,610.07