Finding the Fourth Proportional to 43,435, 65,152.78 and 12,270.52

Step by Step Solution

1. Step 1: Write the proportion equation
   43,435 : 65,152.78 = 12,270.52 : x
2. Step 2: Convert to fraction form
   43,435/65,152.78 = 12,270.52/x
3. Step 3: Cross multiply
   43,435x = 65,152.78 × 12,270.52
4. Step 4: Simplify right side
   43,435x = 799,458,490.05
5. Step 5: Solve for x
   x = 799,458,490.05/43,435
6. Step 6: Final answer
   x = 18,405.86