Finding the Fourth Proportional to 8,308.70, 12,443.23 and 4,791.35

Step by Step Solution

1. Step 1: Write the proportion equation
   8,308.70 : 12,443.23 = 4,791.35 : x
2. Step 2: Convert to fraction form
   8,308.70/12,443.23 = 4,791.35/x
3. Step 3: Cross multiply
   8,308.70x = 12,443.23 × 4,791.35
4. Step 4: Simplify right side
   8,308.70x = 59,619,913.90
5. Step 5: Solve for x
   x = 59,619,913.90/8,308.70
6. Step 6: Final answer
   x = 7,175.60