Finding the Fourth Proportional to 9,162.48, 12,647.16 and 5,579.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,162.48 : 12,647.16 = 5,579.40 : x
2. Step 2: Convert to fraction form
   9,162.48/12,647.16 = 5,579.40/x
3. Step 3: Cross multiply
   9,162.48x = 12,647.16 × 5,579.40
4. Step 4: Simplify right side
   9,162.48x = 70,563,564.50
5. Step 5: Solve for x
   x = 70,563,564.50/9,162.48
6. Step 6: Final answer
   x = 7,701.36