Finding the Fourth Proportional to 21,005.52, 31,513.59 and 6,214.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,005.52 : 31,513.59 = 6,214.38 : x
2. Step 2: Convert to fraction form
   21,005.52/31,513.59 = 6,214.38/x
3. Step 3: Cross multiply
   21,005.52x = 31,513.59 × 6,214.38
4. Step 4: Simplify right side
   21,005.52x = 195,837,234.78
5. Step 5: Solve for x
   x = 195,837,234.78/21,005.52
6. Step 6: Final answer
   x = 9,323.13