Finding the Fourth Proportional to 21,082.70, 29,093.34 and 12,131.59

Step by Step Solution

1. Step 1: Write the proportion equation
   21,082.70 : 29,093.34 = 12,131.59 : x
2. Step 2: Convert to fraction form
   21,082.70/29,093.34 = 12,131.59/x
3. Step 3: Cross multiply
   21,082.70x = 29,093.34 × 12,131.59
4. Step 4: Simplify right side
   21,082.70x = 352,948,472.61
5. Step 5: Solve for x
   x = 352,948,472.61/21,082.70
6. Step 6: Final answer
   x = 16,741.14