Finding the Fourth Proportional to 6,870.53, 9,481.17 and 3,886.34

Step by Step Solution

1. Step 1: Write the proportion equation
   6,870.53 : 9,481.17 = 3,886.34 : x
2. Step 2: Convert to fraction form
   6,870.53/9,481.17 = 3,886.34/x
3. Step 3: Cross multiply
   6,870.53x = 9,481.17 × 3,886.34
4. Step 4: Simplify right side
   6,870.53x = 36,847,002.81
5. Step 5: Solve for x
   x = 36,847,002.81/6,870.53
6. Step 6: Final answer
   x = 5,363.05