Finding the Fourth Proportional to 21,227.86, 31,836.58 and 7,716.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,227.86 : 31,836.58 = 7,716.82 : x
2. Step 2: Convert to fraction form
   21,227.86/31,836.58 = 7,716.82/x
3. Step 3: Cross multiply
   21,227.86x = 31,836.58 × 7,716.82
4. Step 4: Simplify right side
   21,227.86x = 245,677,157.28
5. Step 5: Solve for x
   x = 245,677,157.28/21,227.86
6. Step 6: Final answer
   x = 11,573.34