Finding the Fourth Proportional to 11,709.32, 17,561.39 and 3,387.51

Step by Step Solution

1. Step 1: Write the proportion equation
   11,709.32 : 17,561.39 = 3,387.51 : x
2. Step 2: Convert to fraction form
   11,709.32/17,561.39 = 3,387.51/x
3. Step 3: Cross multiply
   11,709.32x = 17,561.39 × 3,387.51
4. Step 4: Simplify right side
   11,709.32x = 59,489,367.30
5. Step 5: Solve for x
   x = 59,489,367.30/11,709.32
6. Step 6: Final answer
   x = 5,080.52