Finding the Fourth Proportional to 21,869,144.38, 30,183,294.90 and 12,575,998.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,869,144.38 : 30,183,294.90 = 12,575,998.18 : x
2. Step 2: Convert to fraction form
   21,869,144.38/30,183,294.90 = 12,575,998.18/x
3. Step 3: Cross multiply
   21,869,144.38x = 30,183,294.90 × 12,575,998.18
4. Step 4: Simplify right side
   21,869,144.38x = 379,585,061,728,803.25
5. Step 5: Solve for x
   x = 379,585,061,728,803.25/21,869,144.38
6. Step 6: Final answer
   x = 17,357,106.21