Finding the Fourth Proportional to 11,821, 17,734.56 and 5,245.60

Step by Step Solution

1. Step 1: Write the proportion equation
   11,821 : 17,734.56 = 5,245.60 : x
2. Step 2: Convert to fraction form
   11,821/17,734.56 = 5,245.60/x
3. Step 3: Cross multiply
   11,821x = 17,734.56 × 5,245.60
4. Step 4: Simplify right side
   11,821x = 93,028,407.94
5. Step 5: Solve for x
   x = 93,028,407.94/11,821
6. Step 6: Final answer
   x = 7,869.76