Finding the Fourth Proportional to 11,498.50, 17,247.78 and 3,290.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,498.50 : 17,247.78 = 3,290.50 : x
2. Step 2: Convert to fraction form
   11,498.50/17,247.78 = 3,290.50/x
3. Step 3: Cross multiply
   11,498.50x = 17,247.78 × 3,290.50
4. Step 4: Simplify right side
   11,498.50x = 56,753,820.09
5. Step 5: Solve for x
   x = 56,753,820.09/11,498.50
6. Step 6: Final answer
   x = 4,935.76