Finding the Fourth Proportional to 12,636,876.42, 18,951,698.79 and 4,117,957.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,636,876.42 : 18,951,698.79 = 4,117,957.38 : x
2. Step 2: Convert to fraction form
   12,636,876.42/18,951,698.79 = 4,117,957.38/x
3. Step 3: Cross multiply
   12,636,876.42x = 18,951,698.79 × 4,117,957.38
4. Step 4: Simplify right side
   12,636,876.42x = 78,042,287,895,817.56
5. Step 5: Solve for x
   x = 78,042,287,895,817.56/12,636,876.42
6. Step 6: Final answer
   x = 6,175,757.78