Finding the Fourth Proportional to 2,640,961.61, 3,981,809.49 and 2,624,567.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,640,961.61 : 3,981,809.49 = 2,624,567.31 : x
2. Step 2: Convert to fraction form
   2,640,961.61/3,981,809.49 = 2,624,567.31/x
3. Step 3: Cross multiply
   2,640,961.61x = 3,981,809.49 × 2,624,567.31
4. Step 4: Simplify right side
   2,640,961.61x = 10,450,527,022,101.77
5. Step 5: Solve for x
   x = 10,450,527,022,101.77/2,640,961.61
6. Step 6: Final answer
   x = 3,957,091.61