Finding the Fourth Proportional to 21,997.91, 30,358.73 and 12,566.27

Step by Step Solution

1. Step 1: Write the proportion equation
   21,997.91 : 30,358.73 = 12,566.27 : x
2. Step 2: Convert to fraction form
   21,997.91/30,358.73 = 12,566.27/x
3. Step 3: Cross multiply
   21,997.91x = 30,358.73 × 12,566.27
4. Step 4: Simplify right side
   21,997.91x = 381,495,935.21
5. Step 5: Solve for x
   x = 381,495,935.21/21,997.91
6. Step 6: Final answer
   x = 17,342.37