Finding the Fourth Proportional to 11,961.57, 17,939.59 and 3,525.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,961.57 : 17,939.59 = 3,525.88 : x
2. Step 2: Convert to fraction form
   11,961.57/17,939.59 = 3,525.88/x
3. Step 3: Cross multiply
   11,961.57x = 17,939.59 × 3,525.88
4. Step 4: Simplify right side
   11,961.57x = 63,252,841.59
5. Step 5: Solve for x
   x = 63,252,841.59/11,961.57
6. Step 6: Final answer
   x = 5,288.00