Finding the Fourth Proportional to 5,285,557.31, 7,293,874.16 and 2,871,057.47

Step by Step Solution

1. Step 1: Write the proportion equation
   5,285,557.31 : 7,293,874.16 = 2,871,057.47 : x
2. Step 2: Convert to fraction form
   5,285,557.31/7,293,874.16 = 2,871,057.47/x
3. Step 3: Cross multiply
   5,285,557.31x = 7,293,874.16 × 2,871,057.47
4. Step 4: Simplify right side
   5,285,557.31x = 20,941,131,863,016.25
5. Step 5: Solve for x
   x = 20,941,131,863,016.25/5,285,557.31
6. Step 6: Final answer
   x = 3,961,953.42