Finding the Fourth Proportional to 21,870,091.98, 29,918,440.76 and 21,777,976.62

Step by Step Solution

1. Step 1: Write the proportion equation
   21,870,091.98 : 29,918,440.76 = 21,777,976.62 : x
2. Step 2: Convert to fraction form
   21,870,091.98/29,918,440.76 = 21,777,976.62/x
3. Step 3: Cross multiply
   21,870,091.98x = 29,918,440.76 × 21,777,976.62
4. Step 4: Simplify right side
   21,870,091.98x = 651,563,103,269,245.12
5. Step 5: Solve for x
   x = 651,563,103,269,245.12/21,870,091.98
6. Step 6: Final answer
   x = 29,792,426.29