Finding the Fourth Proportional to 3,738.10, 5,155.62 and 3,486.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,738.10 : 5,155.62 = 3,486.59 : x
2. Step 2: Convert to fraction form
   3,738.10/5,155.62 = 3,486.59/x
3. Step 3: Cross multiply
   3,738.10x = 5,155.62 × 3,486.59
4. Step 4: Simplify right side
   3,738.10x = 17,975,572.04
5. Step 5: Solve for x
   x = 17,975,572.04/3,738.10
6. Step 6: Final answer
   x = 4,808.75