Finding the Fourth Proportional to 12,015,919.49, 18,024,987.31 and 3,928,936.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,015,919.49 : 18,024,987.31 = 3,928,936.59 : x
2. Step 2: Convert to fraction form
   12,015,919.49/18,024,987.31 = 3,928,936.59/x
3. Step 3: Cross multiply
   12,015,919.49x = 18,024,987.31 × 3,928,936.59
4. Step 4: Simplify right side
   12,015,919.49x = 70,819,032,166,722.33
5. Step 5: Solve for x
   x = 70,819,032,166,722.33/12,015,919.49
6. Step 6: Final answer
   x = 5,893,767.20