Finding the Fourth Proportional to 3,939,291.89, 5,436,640.71 and 2,309,068.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,939,291.89 : 5,436,640.71 = 2,309,068.91 : x
2. Step 2: Convert to fraction form
   3,939,291.89/5,436,640.71 = 2,309,068.91/x
3. Step 3: Cross multiply
   3,939,291.89x = 5,436,640.71 × 2,309,068.91
4. Step 4: Simplify right side
   3,939,291.89x = 12,553,578,038,301.33
5. Step 5: Solve for x
   x = 12,553,578,038,301.33/3,939,291.89
6. Step 6: Final answer
   x = 3,186,760.05