Finding the Fourth Proportional to 11,821.05, 17,730.09 and 3,500.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,821.05 : 17,730.09 = 3,500.88 : x
2. Step 2: Convert to fraction form
   11,821.05/17,730.09 = 3,500.88/x
3. Step 3: Cross multiply
   11,821.05x = 17,730.09 × 3,500.88
4. Step 4: Simplify right side
   11,821.05x = 62,070,917.48
5. Step 5: Solve for x
   x = 62,070,917.48/11,821.05
6. Step 6: Final answer
   x = 5,250.88