Finding the Fourth Proportional to 11,815.91, 17,726.90 and 3,495.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,815.91 : 17,726.90 = 3,495.59 : x
2. Step 2: Convert to fraction form
   11,815.91/17,726.90 = 3,495.59/x
3. Step 3: Cross multiply
   11,815.91x = 17,726.90 × 3,495.59
4. Step 4: Simplify right side
   11,815.91x = 61,965,974.37
5. Step 5: Solve for x
   x = 61,965,974.37/11,815.91
6. Step 6: Final answer
   x = 5,244.28