Finding the Fourth Proportional to 10,581.99, 15,880.27 and 3,656.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,581.99 : 15,880.27 = 3,656.49 : x
2. Step 2: Convert to fraction form
   10,581.99/15,880.27 = 3,656.49/x
3. Step 3: Cross multiply
   10,581.99x = 15,880.27 × 3,656.49
4. Step 4: Simplify right side
   10,581.99x = 58,066,048.45
5. Step 5: Solve for x
   x = 58,066,048.45/10,581.99
6. Step 6: Final answer
   x = 5,487.25