Finding the Fourth Proportional to 21,033.91, 29,025.70 and 13,076

Step by Step Solution

1. Step 1: Write the proportion equation
   21,033.91 : 29,025.70 = 13,076 : x
2. Step 2: Convert to fraction form
   21,033.91/29,025.70 = 13,076/x
3. Step 3: Cross multiply
   21,033.91x = 29,025.70 × 13,076
4. Step 4: Simplify right side
   21,033.91x = 379,540,053.20
5. Step 5: Solve for x
   x = 379,540,053.20/21,033.91
6. Step 6: Final answer
   x = 18,044.20