Finding the Fourth Proportional to 3,407,140.80, 5,103,822.15 and 2,123,809.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,407,140.80 : 5,103,822.15 = 2,123,809.20 : x
2. Step 2: Convert to fraction form
   3,407,140.80/5,103,822.15 = 2,123,809.20/x
3. Step 3: Cross multiply
   3,407,140.80x = 5,103,822.15 × 2,123,809.20
4. Step 4: Simplify right side
   3,407,140.80x = 10,839,544,437,333.78
5. Step 5: Solve for x
   x = 10,839,544,437,333.78/3,407,140.80
6. Step 6: Final answer
   x = 3,181,419.58