Finding the Fourth Proportional to 3,907,854.86, 5,393,011.59 and 2,165,519.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,907,854.86 : 5,393,011.59 = 2,165,519.34 : x
2. Step 2: Convert to fraction form
   3,907,854.86/5,393,011.59 = 2,165,519.34/x
3. Step 3: Cross multiply
   3,907,854.86x = 5,393,011.59 × 2,165,519.34
4. Step 4: Simplify right side
   3,907,854.86x = 11,678,670,898,989.15
5. Step 5: Solve for x
   x = 11,678,670,898,989.15/3,907,854.86
6. Step 6: Final answer
   x = 2,988,511.94