Finding the Fourth Proportional to 43,997.69, 65,990.69 and 12,410.30

Step by Step Solution

1. Step 1: Write the proportion equation
   43,997.69 : 65,990.69 = 12,410.30 : x
2. Step 2: Convert to fraction form
   43,997.69/65,990.69 = 12,410.30/x
3. Step 3: Cross multiply
   43,997.69x = 65,990.69 × 12,410.30
4. Step 4: Simplify right side
   43,997.69x = 818,963,868.10
5. Step 5: Solve for x
   x = 818,963,868.10/43,997.69
6. Step 6: Final answer
   x = 18,613.79