Finding the Fourth Proportional to 5,691.42, 7,859.12 and 3,570.60

Step by Step Solution

1. Step 1: Write the proportion equation
   5,691.42 : 7,859.12 = 3,570.60 : x
2. Step 2: Convert to fraction form
   5,691.42/7,859.12 = 3,570.60/x
3. Step 3: Cross multiply
   5,691.42x = 7,859.12 × 3,570.60
4. Step 4: Simplify right side
   5,691.42x = 28,061,749.32
5. Step 5: Solve for x
   x = 28,061,749.32/5,691.42
6. Step 6: Final answer
   x = 4,930.53