Finding the Fourth Proportional to 11,637.19, 17,456.31 and 3,317.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,637.19 : 17,456.31 = 3,317.78 : x
2. Step 2: Convert to fraction form
   11,637.19/17,456.31 = 3,317.78/x
3. Step 3: Cross multiply
   11,637.19x = 17,456.31 × 3,317.78
4. Step 4: Simplify right side
   11,637.19x = 57,916,196.19
5. Step 5: Solve for x
   x = 57,916,196.19/11,637.19
6. Step 6: Final answer
   x = 4,976.82