Finding the Fourth Proportional to 6,618,338,128.72, 9,927,422,158.20 and 2,198,789,742.16

Step by Step Solution

1. Step 1: Write the proportion equation
   6,618,338,128.72 : 9,927,422,158.20 = 2,198,789,742.16 : x
2. Step 2: Convert to fraction form
   6,618,338,128.72/9,927,422,158.20 = 2,198,789,742.16/x
3. Step 3: Cross multiply
   6,618,338,128.72x = 9,927,422,158.20 × 2,198,789,742.16
4. Step 4: Simplify right side
   6,618,338,128.72x = 21,828,314,007,542,050,816
5. Step 5: Solve for x
   x = 21,828,314,007,542,050,816/6,618,338,128.72
6. Step 6: Final answer
   x = 3,298,156,362.37