Finding the Fourth Proportional to 11,661.32, 17,486.22 and 3,867.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,661.32 : 17,486.22 = 3,867.50 : x
2. Step 2: Convert to fraction form
   11,661.32/17,486.22 = 3,867.50/x
3. Step 3: Cross multiply
   11,661.32x = 17,486.22 × 3,867.50
4. Step 4: Simplify right side
   11,661.32x = 67,627,955.85
5. Step 5: Solve for x
   x = 67,627,955.85/11,661.32
6. Step 6: Final answer
   x = 5,799.34