Finding the Fourth Proportional to 21,022.08, 31,521.50 and 8,359.01

Step by Step Solution

1. Step 1: Write the proportion equation
   21,022.08 : 31,521.50 = 8,359.01 : x
2. Step 2: Convert to fraction form
   21,022.08/31,521.50 = 8,359.01/x
3. Step 3: Cross multiply
   21,022.08x = 31,521.50 × 8,359.01
4. Step 4: Simplify right side
   21,022.08x = 263,488,533.72
5. Step 5: Solve for x
   x = 263,488,533.72/21,022.08
6. Step 6: Final answer
   x = 12,533.89