Finding the Fourth Proportional to 3,689.88, 5,114.01 and 3,620.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,689.88 : 5,114.01 = 3,620.76 : x
2. Step 2: Convert to fraction form
   3,689.88/5,114.01 = 3,620.76/x
3. Step 3: Cross multiply
   3,689.88x = 5,114.01 × 3,620.76
4. Step 4: Simplify right side
   3,689.88x = 18,516,602.85
5. Step 5: Solve for x
   x = 18,516,602.85/3,689.88
6. Step 6: Final answer
   x = 5,018.21