Finding the Fourth Proportional to 21,979,171.98, 30,327,246.82 and 12,683,350.80

Step by Step Solution

1. Step 1: Write the proportion equation
   21,979,171.98 : 30,327,246.82 = 12,683,350.80 : x
2. Step 2: Convert to fraction form
   21,979,171.98/30,327,246.82 = 12,683,350.80/x
3. Step 3: Cross multiply
   21,979,171.98x = 30,327,246.82 × 12,683,350.80
4. Step 4: Simplify right side
   21,979,171.98x = 384,651,110,152,827.75
5. Step 5: Solve for x
   x = 384,651,110,152,827.75/21,979,171.98
6. Step 6: Final answer
   x = 17,500,709.79