Finding the Fourth Proportional to 3,722,405.05, 5,571,797.78 and 3,722,405.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,722,405.05 : 5,571,797.78 = 3,722,405.05 : x
2. Step 2: Convert to fraction form
   3,722,405.05/5,571,797.78 = 3,722,405.05/x
3. Step 3: Cross multiply
   3,722,405.05x = 5,571,797.78 × 3,722,405.05
4. Step 4: Simplify right side
   3,722,405.05x = 20,740,488,175,238.77
5. Step 5: Solve for x
   x = 20,740,488,175,238.77/3,722,405.05
6. Step 6: Final answer
   x = 5,571,797.78