Finding the Fourth Proportional to 3,629,780.64, 5,009,056.56 and 1,998,153.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,629,780.64 : 5,009,056.56 = 1,998,153.12 : x
2. Step 2: Convert to fraction form
   3,629,780.64/5,009,056.56 = 1,998,153.12/x
3. Step 3: Cross multiply
   3,629,780.64x = 5,009,056.56 × 1,998,153.12
4. Step 4: Simplify right side
   3,629,780.64x = 10,008,861,993,620.47
5. Step 5: Solve for x
   x = 10,008,861,993,620.47/3,629,780.64
6. Step 6: Final answer
   x = 2,757,428.89