Finding the Fourth Proportional to 9,086.45, 12,539.42 and 5,107.33

Step by Step Solution

1. Step 1: Write the proportion equation
   9,086.45 : 12,539.42 = 5,107.33 : x
2. Step 2: Convert to fraction form
   9,086.45/12,539.42 = 5,107.33/x
3. Step 3: Cross multiply
   9,086.45x = 12,539.42 × 5,107.33
4. Step 4: Simplify right side
   9,086.45x = 64,042,955.95
5. Step 5: Solve for x
   x = 64,042,955.95/9,086.45
6. Step 6: Final answer
   x = 7,048.18