Finding the Fourth Proportional to 21,979,169.23, 30,327,243.02 and 12,683,348.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,979,169.23 : 30,327,243.02 = 12,683,348.05 : x
2. Step 2: Convert to fraction form
   21,979,169.23/30,327,243.02 = 12,683,348.05/x
3. Step 3: Cross multiply
   21,979,169.23x = 30,327,243.02 × 12,683,348.05
4. Step 4: Simplify right side
   21,979,169.23x = 384,650,978,651,301.50
5. Step 5: Solve for x
   x = 384,650,978,651,301.50/21,979,169.23
6. Step 6: Final answer
   x = 17,500,705.99