Finding the Fourth Proportional to 22,338,555.42, 30,818,341.78 and 12,917,605.54

Step by Step Solution

1. Step 1: Write the proportion equation
   22,338,555.42 : 30,818,341.78 = 12,917,605.54 : x
2. Step 2: Convert to fraction form
   22,338,555.42/30,818,341.78 = 12,917,605.54/x
3. Step 3: Cross multiply
   22,338,555.42x = 30,818,341.78 × 12,917,605.54
4. Step 4: Simplify right side
   22,338,555.42x = 398,099,182,510,941.44
5. Step 5: Solve for x
   x = 398,099,182,510,941.44/22,338,555.42
6. Step 6: Final answer
   x = 17,821,169.50