Finding the Fourth Proportional to 11,587.17, 17,381.37 and 3,690.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,587.17 : 17,381.37 = 3,690.55 : x
2. Step 2: Convert to fraction form
   11,587.17/17,381.37 = 3,690.55/x
3. Step 3: Cross multiply
   11,587.17x = 17,381.37 × 3,690.55
4. Step 4: Simplify right side
   11,587.17x = 64,146,815.05
5. Step 5: Solve for x
   x = 64,146,815.05/11,587.17
6. Step 6: Final answer
   x = 5,536.02