Finding the Fourth Proportional to 11,900.39, 17,851.05 and 3,581.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,900.39 : 17,851.05 = 3,581.59 : x
2. Step 2: Convert to fraction form
   11,900.39/17,851.05 = 3,581.59/x
3. Step 3: Cross multiply
   11,900.39x = 17,851.05 × 3,581.59
4. Step 4: Simplify right side
   11,900.39x = 63,935,166.11
5. Step 5: Solve for x
   x = 63,935,166.11/11,900.39
6. Step 6: Final answer
   x = 5,372.53