Finding the Fourth Proportional to 7,188,352,162.80, 10,783,070,389.98 and 2,145,810,496.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,188,352,162.80 : 10,783,070,389.98 = 2,145,810,496.20 : x
2. Step 2: Convert to fraction form
   7,188,352,162.80/10,783,070,389.98 = 2,145,810,496.20/x
3. Step 3: Cross multiply
   7,188,352,162.80x = 10,783,070,389.98 × 2,145,810,496.20
4. Step 4: Simplify right side
   7,188,352,162.80x = 23,138,425,624,082,509,824
5. Step 5: Solve for x
   x = 23,138,425,624,082,509,824/7,188,352,162.80
6. Step 6: Final answer
   x = 3,218,877,581.41