Finding the Fourth Proportional to 21,082.41, 29,092.77 and 13,019.67

Step by Step Solution

1. Step 1: Write the proportion equation
   21,082.41 : 29,092.77 = 13,019.67 : x
2. Step 2: Convert to fraction form
   21,082.41/29,092.77 = 13,019.67/x
3. Step 3: Cross multiply
   21,082.41x = 29,092.77 × 13,019.67
4. Step 4: Simplify right side
   21,082.41x = 378,778,264.79
5. Step 5: Solve for x
   x = 378,778,264.79/21,082.41
6. Step 6: Final answer
   x = 17,966.55