Finding the Fourth Proportional to 11,958.93, 17,939.01 and 3,638.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,958.93 : 17,939.01 = 3,638.30 : x
2. Step 2: Convert to fraction form
   11,958.93/17,939.01 = 3,638.30/x
3. Step 3: Cross multiply
   11,958.93x = 17,939.01 × 3,638.30
4. Step 4: Simplify right side
   11,958.93x = 65,267,410.39
5. Step 5: Solve for x
   x = 65,267,410.39/11,958.93
6. Step 6: Final answer
   x = 5,457.63