Finding the Fourth Proportional to 11,900.57, 17,838.30 and 3,995.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,900.57 : 17,838.30 = 3,995.59 : x
2. Step 2: Convert to fraction form
   11,900.57/17,838.30 = 3,995.59/x
3. Step 3: Cross multiply
   11,900.57x = 17,838.30 × 3,995.59
4. Step 4: Simplify right side
   11,900.57x = 71,274,533.10
5. Step 5: Solve for x
   x = 71,274,533.10/11,900.57
6. Step 6: Final answer
   x = 5,989.17