Finding the Fourth Proportional to 11,065.05, 15,248.34 and 9,179.37

Step by Step Solution

1. Step 1: Write the proportion equation
   11,065.05 : 15,248.34 = 9,179.37 : x
2. Step 2: Convert to fraction form
   11,065.05/15,248.34 = 9,179.37/x
3. Step 3: Cross multiply
   11,065.05x = 15,248.34 × 9,179.37
4. Step 4: Simplify right side
   11,065.05x = 139,970,154.75
5. Step 5: Solve for x
   x = 139,970,154.75/11,065.05
6. Step 6: Final answer
   x = 12,649.75