Finding the Fourth Proportional to 9,162.26, 12,641.86 and 5,579.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,162.26 : 12,641.86 = 5,579.08 : x
2. Step 2: Convert to fraction form
   9,162.26/12,641.86 = 5,579.08/x
3. Step 3: Cross multiply
   9,162.26x = 12,641.86 × 5,579.08
4. Step 4: Simplify right side
   9,162.26x = 70,529,892.28
5. Step 5: Solve for x
   x = 70,529,892.28/9,162.26
6. Step 6: Final answer
   x = 7,697.87