Finding the Fourth Proportional to 19,830.42, 27,360.41 and 11,329.47

Step by Step Solution

1. Step 1: Write the proportion equation
   19,830.42 : 27,360.41 = 11,329.47 : x
2. Step 2: Convert to fraction form
   19,830.42/27,360.41 = 11,329.47/x
3. Step 3: Cross multiply
   19,830.42x = 27,360.41 × 11,329.47
4. Step 4: Simplify right side
   19,830.42x = 309,978,944.28
5. Step 5: Solve for x
   x = 309,978,944.28/19,830.42
6. Step 6: Final answer
   x = 15,631.49