Finding the Fourth Proportional to 9,086.18, 12,538.98 and 5,107.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,086.18 : 12,538.98 = 5,107.18 : x
2. Step 2: Convert to fraction form
   9,086.18/12,538.98 = 5,107.18/x
3. Step 3: Cross multiply
   9,086.18x = 12,538.98 × 5,107.18
4. Step 4: Simplify right side
   9,086.18x = 64,038,827.88
5. Step 5: Solve for x
   x = 64,038,827.88/9,086.18
6. Step 6: Final answer
   x = 7,047.94