Finding the Fourth Proportional to 9,087.12, 12,539.54 and 5,107.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,087.12 : 12,539.54 = 5,107.48 : x
2. Step 2: Convert to fraction form
   9,087.12/12,539.54 = 5,107.48/x
3. Step 3: Cross multiply
   9,087.12x = 12,539.54 × 5,107.48
4. Step 4: Simplify right side
   9,087.12x = 64,045,449.76
5. Step 5: Solve for x
   x = 64,045,449.76/9,087.12
6. Step 6: Final answer
   x = 7,047.94