Finding the Fourth Proportional to 11,498.78, 17,243.84 and 3,705.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,498.78 : 17,243.84 = 3,705.50 : x
2. Step 2: Convert to fraction form
   11,498.78/17,243.84 = 3,705.50/x
3. Step 3: Cross multiply
   11,498.78x = 17,243.84 × 3,705.50
4. Step 4: Simplify right side
   11,498.78x = 63,897,049.12
5. Step 5: Solve for x
   x = 63,897,049.12/11,498.78
6. Step 6: Final answer
   x = 5,556.85