Finding the Fourth Proportional to 10,485.73, 15,729.69 and 5,222.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,485.73 : 15,729.69 = 5,222.04 : x
2. Step 2: Convert to fraction form
   10,485.73/15,729.69 = 5,222.04/x
3. Step 3: Cross multiply
   10,485.73x = 15,729.69 × 5,222.04
4. Step 4: Simplify right side
   10,485.73x = 82,141,070.37
5. Step 5: Solve for x
   x = 82,141,070.37/10,485.73
6. Step 6: Final answer
   x = 7,833.61