Finding the Fourth Proportional to 3,997,947.12, 5,517,297.42 and 2,187,111.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,997,947.12 : 5,517,297.42 = 2,187,111.12 : x
2. Step 2: Convert to fraction form
   3,997,947.12/5,517,297.42 = 2,187,111.12/x
3. Step 3: Cross multiply
   3,997,947.12x = 5,517,297.42 × 2,187,111.12
4. Step 4: Simplify right side
   3,997,947.12x = 12,066,942,539,629.31
5. Step 5: Solve for x
   x = 12,066,942,539,629.31/3,997,947.12
6. Step 6: Final answer
   x = 3,018,284.68