Finding the Fourth Proportional to 22,137.06, 30,758.79 and 21,905.94

Step by Step Solution

1. Step 1: Write the proportion equation
   22,137.06 : 30,758.79 = 21,905.94 : x
2. Step 2: Convert to fraction form
   22,137.06/30,758.79 = 21,905.94/x
3. Step 3: Cross multiply
   22,137.06x = 30,758.79 × 21,905.94
4. Step 4: Simplify right side
   22,137.06x = 673,800,208.21
5. Step 5: Solve for x
   x = 673,800,208.21/22,137.06
6. Step 6: Final answer
   x = 30,437.66