Finding the Fourth Proportional to 21,076.83, 29,082.87 and 12,124.71

Step by Step Solution

1. Step 1: Write the proportion equation
   21,076.83 : 29,082.87 = 12,124.71 : x
2. Step 2: Convert to fraction form
   21,076.83/29,082.87 = 12,124.71/x
3. Step 3: Cross multiply
   21,076.83x = 29,082.87 × 12,124.71
4. Step 4: Simplify right side
   21,076.83x = 352,621,364.72
5. Step 5: Solve for x
   x = 352,621,364.72/21,076.83
6. Step 6: Final answer
   x = 16,730.28