Finding the Fourth Proportional to 11,618.37, 17,417.76 and 5,039.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,618.37 : 17,417.76 = 5,039.61 : x
2. Step 2: Convert to fraction form
   11,618.37/17,417.76 = 5,039.61/x
3. Step 3: Cross multiply
   11,618.37x = 17,417.76 × 5,039.61
4. Step 4: Simplify right side
   11,618.37x = 87,778,717.47
5. Step 5: Solve for x
   x = 87,778,717.47/11,618.37
6. Step 6: Final answer
   x = 7,555.17