Finding the Fourth Proportional to 3,886.96, 5,363.12 and 3,260.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,886.96 : 5,363.12 = 3,260.02 : x
2. Step 2: Convert to fraction form
   3,886.96/5,363.12 = 3,260.02/x
3. Step 3: Cross multiply
   3,886.96x = 5,363.12 × 3,260.02
4. Step 4: Simplify right side
   3,886.96x = 17,483,878.46
5. Step 5: Solve for x
   x = 17,483,878.46/3,886.96
6. Step 6: Final answer
   x = 4,498.09