Finding the Fourth Proportional to 6,870.06, 9,480.54 and 3,886.02

Step by Step Solution

1. Step 1: Write the proportion equation
   6,870.06 : 9,480.54 = 3,886.02 : x
2. Step 2: Convert to fraction form
   6,870.06/9,480.54 = 3,886.02/x
3. Step 3: Cross multiply
   6,870.06x = 9,480.54 × 3,886.02
4. Step 4: Simplify right side
   6,870.06x = 36,841,568.05
5. Step 5: Solve for x
   x = 36,841,568.05/6,870.06
6. Step 6: Final answer
   x = 5,362.63