Finding the Fourth Proportional to 3,997,520.43, 5,516,578.20 and 2,161,978.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,997,520.43 : 5,516,578.20 = 2,161,978.71 : x
2. Step 2: Convert to fraction form
   3,997,520.43/5,516,578.20 = 2,161,978.71/x
3. Step 3: Cross multiply
   3,997,520.43x = 5,516,578.20 × 2,161,978.71
4. Step 4: Simplify right side
   3,997,520.43x = 11,926,724,587,462.28
5. Step 5: Solve for x
   x = 11,926,724,587,462.28/3,997,520.43
6. Step 6: Final answer
   x = 2,983,530.62