Finding the Fourth Proportional to 11,908.89, 17,865.16 and 3,587.81

Step by Step Solution

1. Step 1: Write the proportion equation
   11,908.89 : 17,865.16 = 3,587.81 : x
2. Step 2: Convert to fraction form
   11,908.89/17,865.16 = 3,587.81/x
3. Step 3: Cross multiply
   11,908.89x = 17,865.16 × 3,587.81
4. Step 4: Simplify right side
   11,908.89x = 64,096,701.40
5. Step 5: Solve for x
   x = 64,096,701.40/11,908.89
6. Step 6: Final answer
   x = 5,382.26