Finding the Fourth Proportional to 3,689.01, 5,492.37 and 3,637.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,689.01 : 5,492.37 = 3,637.31 : x
2. Step 2: Convert to fraction form
   3,689.01/5,492.37 = 3,637.31/x
3. Step 3: Cross multiply
   3,689.01x = 5,492.37 × 3,637.31
4. Step 4: Simplify right side
   3,689.01x = 19,977,438.50
5. Step 5: Solve for x
   x = 19,977,438.50/3,689.01
6. Step 6: Final answer
   x = 5,415.39