Finding the Fourth Proportional to 8,570.76, 12,858.28 and 3,377.04

Step by Step Solution

1. Step 1: Write the proportion equation
   8,570.76 : 12,858.28 = 3,377.04 : x
2. Step 2: Convert to fraction form
   8,570.76/12,858.28 = 3,377.04/x
3. Step 3: Cross multiply
   8,570.76x = 12,858.28 × 3,377.04
4. Step 4: Simplify right side
   8,570.76x = 43,422,925.89
5. Step 5: Solve for x
   x = 43,422,925.89/8,570.76
6. Step 6: Final answer
   x = 5,066.40