Finding the Fourth Proportional to 21,242.30, 29,314.71 and 11,682.59

Step by Step Solution

1. Step 1: Write the proportion equation
   21,242.30 : 29,314.71 = 11,682.59 : x
2. Step 2: Convert to fraction form
   21,242.30/29,314.71 = 11,682.59/x
3. Step 3: Cross multiply
   21,242.30x = 29,314.71 × 11,682.59
4. Step 4: Simplify right side
   21,242.30x = 342,471,591.33
5. Step 5: Solve for x
   x = 342,471,591.33/21,242.30
6. Step 6: Final answer
   x = 16,122.16