Finding the Fourth Proportional to 6,538,399.31, 9,809,091.59 and 1,990,092.67

Step by Step Solution

1. Step 1: Write the proportion equation
   6,538,399.31 : 9,809,091.59 = 1,990,092.67 : x
2. Step 2: Convert to fraction form
   6,538,399.31/9,809,091.59 = 1,990,092.67/x
3. Step 3: Cross multiply
   6,538,399.31x = 9,809,091.59 × 1,990,092.67
4. Step 4: Simplify right side
   6,538,399.31x = 19,521,001,238,144.45
5. Step 5: Solve for x
   x = 19,521,001,238,144.45/6,538,399.31
6. Step 6: Final answer
   x = 2,985,593.31