Finding the Fourth Proportional to 8,570.07, 12,848.90 and 5,789.79

Step by Step Solution

1. Step 1: Write the proportion equation
   8,570.07 : 12,848.90 = 5,789.79 : x
2. Step 2: Convert to fraction form
   8,570.07/12,848.90 = 5,789.79/x
3. Step 3: Cross multiply
   8,570.07x = 12,848.90 × 5,789.79
4. Step 4: Simplify right side
   8,570.07x = 74,392,403.78
5. Step 5: Solve for x
   x = 74,392,403.78/8,570.07
6. Step 6: Final answer
   x = 8,680.49