Finding the Fourth Proportional to 43,427.09, 65,131.52 and 12,255.05

Step by Step Solution

1. Step 1: Write the proportion equation
   43,427.09 : 65,131.52 = 12,255.05 : x
2. Step 2: Convert to fraction form
   43,427.09/65,131.52 = 12,255.05/x
3. Step 3: Cross multiply
   43,427.09x = 65,131.52 × 12,255.05
4. Step 4: Simplify right side
   43,427.09x = 798,189,803.83
5. Step 5: Solve for x
   x = 798,189,803.83/43,427.09
6. Step 6: Final answer
   x = 18,380.00