Finding the Fourth Proportional to 11,805.06, 17,709.51 and 3,485.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,805.06 : 17,709.51 = 3,485.91 : x
2. Step 2: Convert to fraction form
   11,805.06/17,709.51 = 3,485.91/x
3. Step 3: Cross multiply
   11,805.06x = 17,709.51 × 3,485.91
4. Step 4: Simplify right side
   11,805.06x = 61,733,811.34
5. Step 5: Solve for x
   x = 61,733,811.34/11,805.06
6. Step 6: Final answer
   x = 5,229.44