Finding the Fourth Proportional to 3,209,665.42, 4,426,755.53 and 2,821,651.21

Step by Step Solution

1. Step 1: Write the proportion equation
   3,209,665.42 : 4,426,755.53 = 2,821,651.21 : x
2. Step 2: Convert to fraction form
   3,209,665.42/4,426,755.53 = 2,821,651.21/x
3. Step 3: Cross multiply
   3,209,665.42x = 4,426,755.53 × 2,821,651.21
4. Step 4: Simplify right side
   3,209,665.42x = 12,490,760,097,598.69
5. Step 5: Solve for x
   x = 12,490,760,097,598.69/3,209,665.42
6. Step 6: Final answer
   x = 3,891,608.15