Finding the Fourth Proportional to 10,659.24, 15,990.83 and 3,638.87

Step by Step Solution

1. Step 1: Write the proportion equation
   10,659.24 : 15,990.83 = 3,638.87 : x
2. Step 2: Convert to fraction form
   10,659.24/15,990.83 = 3,638.87/x
3. Step 3: Cross multiply
   10,659.24x = 15,990.83 × 3,638.87
4. Step 4: Simplify right side
   10,659.24x = 58,188,547.49
5. Step 5: Solve for x
   x = 58,188,547.49/10,659.24
6. Step 6: Final answer
   x = 5,458.98