Finding the Fourth Proportional to 18,111,020.82, 24,990,937.62 and 12,243,422.10

Step by Step Solution

1. Step 1: Write the proportion equation
   18,111,020.82 : 24,990,937.62 = 12,243,422.10 : x
2. Step 2: Convert to fraction form
   18,111,020.82/24,990,937.62 = 12,243,422.10/x
3. Step 3: Cross multiply
   18,111,020.82x = 24,990,937.62 × 12,243,422.10
4. Step 4: Simplify right side
   18,111,020.82x = 305,974,597,956,429.38
5. Step 5: Solve for x
   x = 305,974,597,956,429.38/18,111,020.82
6. Step 6: Final answer
   x = 16,894,387.18