Finding the Fourth Proportional to 21,976.76, 30,326.82 and 13,025

Step by Step Solution

1. Step 1: Write the proportion equation
   21,976.76 : 30,326.82 = 13,025 : x
2. Step 2: Convert to fraction form
   21,976.76/30,326.82 = 13,025/x
3. Step 3: Cross multiply
   21,976.76x = 30,326.82 × 13,025
4. Step 4: Simplify right side
   21,976.76x = 395,006,830.50
5. Step 5: Solve for x
   x = 395,006,830.50/21,976.76
6. Step 6: Final answer
   x = 17,973.84