Finding the Fourth Proportional to 9,311.72, 13,964.58 and 3,070.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,311.72 : 13,964.58 = 3,070.55 : x
2. Step 2: Convert to fraction form
   9,311.72/13,964.58 = 3,070.55/x
3. Step 3: Cross multiply
   9,311.72x = 13,964.58 × 3,070.55
4. Step 4: Simplify right side
   9,311.72x = 42,878,976.03
5. Step 5: Solve for x
   x = 42,878,976.03/9,311.72
6. Step 6: Final answer
   x = 4,604.84