Finding the Fourth Proportional to 11,655.12, 17,471.52 and 3,859.68

Step by Step Solution

1. Step 1: Write the proportion equation
   11,655.12 : 17,471.52 = 3,859.68 : x
2. Step 2: Convert to fraction form
   11,655.12/17,471.52 = 3,859.68/x
3. Step 3: Cross multiply
   11,655.12x = 17,471.52 × 3,859.68
4. Step 4: Simplify right side
   11,655.12x = 67,434,476.31
5. Step 5: Solve for x
   x = 67,434,476.31/11,655.12
6. Step 6: Final answer
   x = 5,785.82