Finding the Fourth Proportional to 21,084.19, 31,630.83 and 7,936.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,084.19 : 31,630.83 = 7,936.52 : x
2. Step 2: Convert to fraction form
   21,084.19/31,630.83 = 7,936.52/x
3. Step 3: Cross multiply
   21,084.19x = 31,630.83 × 7,936.52
4. Step 4: Simplify right side
   21,084.19x = 251,038,556.76
5. Step 5: Solve for x
   x = 251,038,556.76/21,084.19
6. Step 6: Final answer
   x = 11,906.48