Finding the Fourth Proportional to 3,692.71, 5,500.17 and 3,615.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,692.71 : 5,500.17 = 3,615.81 : x
2. Step 2: Convert to fraction form
   3,692.71/5,500.17 = 3,615.81/x
3. Step 3: Cross multiply
   3,692.71x = 5,500.17 × 3,615.81
4. Step 4: Simplify right side
   3,692.71x = 19,887,549.06
5. Step 5: Solve for x
   x = 19,887,549.06/3,692.71
6. Step 6: Final answer
   x = 5,385.62