Finding the Fourth Proportional to 10,845.89, 16,262.46 and 5,221.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,845.89 : 16,262.46 = 5,221.06 : x
2. Step 2: Convert to fraction form
   10,845.89/16,262.46 = 5,221.06/x
3. Step 3: Cross multiply
   10,845.89x = 16,262.46 × 5,221.06
4. Step 4: Simplify right side
   10,845.89x = 84,907,279.41
5. Step 5: Solve for x
   x = 84,907,279.41/10,845.89
6. Step 6: Final answer
   x = 7,828.52