Finding the Fourth Proportional to 3,870,636.78, 5,341,661.06 and 2,151,786

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870,636.78 : 5,341,661.06 = 2,151,786 : x
2. Step 2: Convert to fraction form
   3,870,636.78/5,341,661.06 = 2,151,786/x
3. Step 3: Cross multiply
   3,870,636.78x = 5,341,661.06 × 2,151,786
4. Step 4: Simplify right side
   3,870,636.78x = 11,494,111,474,894.23
5. Step 5: Solve for x
   x = 11,494,111,474,894.23/3,870,636.78
6. Step 6: Final answer
   x = 2,969,566.02