Finding the Fourth Proportional to 3,686.67, 5,492.67 and 3,500.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,686.67 : 5,492.67 = 3,500.76 : x
2. Step 2: Convert to fraction form
   3,686.67/5,492.67 = 3,500.76/x
3. Step 3: Cross multiply
   3,686.67x = 5,492.67 × 3,500.76
4. Step 4: Simplify right side
   3,686.67x = 19,228,519.43
5. Step 5: Solve for x
   x = 19,228,519.43/3,686.67
6. Step 6: Final answer
   x = 5,215.69