Finding the Fourth Proportional to 3,669.05, 5,151.25 and 3,669.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,669.05 : 5,151.25 = 3,669.05 : x
2. Step 2: Convert to fraction form
   3,669.05/5,151.25 = 3,669.05/x
3. Step 3: Cross multiply
   3,669.05x = 5,151.25 × 3,669.05
4. Step 4: Simplify right side
   3,669.05x = 18,900,193.81
5. Step 5: Solve for x
   x = 18,900,193.81/3,669.05
6. Step 6: Final answer
   x = 5,151.25