Finding the Fourth Proportional to 3,998,745.78, 5,518,131.93 and 2,280,419.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,998,745.78 : 5,518,131.93 = 2,280,419.34 : x
2. Step 2: Convert to fraction form
   3,998,745.78/5,518,131.93 = 2,280,419.34/x
3. Step 3: Cross multiply
   3,998,745.78x = 5,518,131.93 × 2,280,419.34
4. Step 4: Simplify right side
   3,998,745.78x = 12,583,654,773,843.53
5. Step 5: Solve for x
   x = 12,583,654,773,843.53/3,998,745.78
6. Step 6: Final answer
   x = 3,146,900.42