Finding the Fourth Proportional to 11,808.91, 17,711.88 and 3,488.77

Step by Step Solution

1. Step 1: Write the proportion equation
   11,808.91 : 17,711.88 = 3,488.77 : x
2. Step 2: Convert to fraction form
   11,808.91/17,711.88 = 3,488.77/x
3. Step 3: Cross multiply
   11,808.91x = 17,711.88 × 3,488.77
4. Step 4: Simplify right side
   11,808.91x = 61,792,675.59
5. Step 5: Solve for x
   x = 61,792,675.59/11,808.91
6. Step 6: Final answer
   x = 5,232.72