Finding the Fourth Proportional to 19,002,582.56, 28,499,490.12 and 11,328,380.12

Step by Step Solution

1. Step 1: Write the proportion equation
   19,002,582.56 : 28,499,490.12 = 11,328,380.12 : x
2. Step 2: Convert to fraction form
   19,002,582.56/28,499,490.12 = 11,328,380.12/x
3. Step 3: Cross multiply
   19,002,582.56x = 28,499,490.12 × 11,328,380.12
4. Step 4: Simplify right side
   19,002,582.56x = 322,853,057,305,544.38
5. Step 5: Solve for x
   x = 322,853,057,305,544.38/19,002,582.56
6. Step 6: Final answer
   x = 16,989,956.83