Finding the Fourth Proportional to 21,131.48, 31,696.14 and 6,340.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,131.48 : 31,696.14 = 6,340.52 : x
2. Step 2: Convert to fraction form
   21,131.48/31,696.14 = 6,340.52/x
3. Step 3: Cross multiply
   21,131.48x = 31,696.14 × 6,340.52
4. Step 4: Simplify right side
   21,131.48x = 200,970,009.59
5. Step 5: Solve for x
   x = 200,970,009.59/21,131.48
6. Step 6: Final answer
   x = 9,510.46