Finding the Fourth Proportional to 3,898,929.49, 5,380,161.59 and 2,156,561.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,898,929.49 : 5,380,161.59 = 2,156,561.37 : x
2. Step 2: Convert to fraction form
   3,898,929.49/5,380,161.59 = 2,156,561.37/x
3. Step 3: Cross multiply
   3,898,929.49x = 5,380,161.59 × 2,156,561.37
4. Step 4: Simplify right side
   3,898,929.49x = 11,602,648,654,743.18
5. Step 5: Solve for x
   x = 11,602,648,654,743.18/3,898,929.49
6. Step 6: Final answer
   x = 2,975,854.96