Finding the Fourth Proportional to 22,581,821.77, 31,156,048.60 and 12,790,710.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,581,821.77 : 31,156,048.60 = 12,790,710.25 : x
2. Step 2: Convert to fraction form
   22,581,821.77/31,156,048.60 = 12,790,710.25/x
3. Step 3: Cross multiply
   22,581,821.77x = 31,156,048.60 × 12,790,710.25
4. Step 4: Simplify right side
   22,581,821.77x = 398,507,990,067,651.25
5. Step 5: Solve for x
   x = 398,507,990,067,651.25/22,581,821.77
6. Step 6: Final answer
   x = 17,647,291.44