Finding the Fourth Proportional to 17,389,978.63, 26,085,806.78 and 5,718,091.63

Step by Step Solution

1. Step 1: Write the proportion equation
   17,389,978.63 : 26,085,806.78 = 5,718,091.63 : x
2. Step 2: Convert to fraction form
   17,389,978.63/26,085,806.78 = 5,718,091.63/x
3. Step 3: Cross multiply
   17,389,978.63x = 26,085,806.78 × 5,718,091.63
4. Step 4: Simplify right side
   17,389,978.63x = 149,161,033,410,515.25
5. Step 5: Solve for x
   x = 149,161,033,410,515.25/17,389,978.63
6. Step 6: Final answer
   x = 8,577,413.27