Finding the Fourth Proportional to 12,485,383,706.86, 18,727,133,627.25 and 3,976,422,640.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,485,383,706.86 : 18,727,133,627.25 = 3,976,422,640.79 : x
2. Step 2: Convert to fraction form
   12,485,383,706.86/18,727,133,627.25 = 3,976,422,640.79/x
3. Step 3: Cross multiply
   12,485,383,706.86x = 18,727,133,627.25 × 3,976,422,640.79
4. Step 4: Simplify right side
   12,485,383,706.86x = 74,466,998,152,403,025,920
5. Step 5: Solve for x
   x = 74,466,998,152,403,025,920/12,485,383,706.86
6. Step 6: Final answer
   x = 5,964,333,968.49