Finding the Fourth Proportional to 11,178.67, 15,433.33 and 7,405.05

Step by Step Solution

1. Step 1: Write the proportion equation
   11,178.67 : 15,433.33 = 7,405.05 : x
2. Step 2: Convert to fraction form
   11,178.67/15,433.33 = 7,405.05/x
3. Step 3: Cross multiply
   11,178.67x = 15,433.33 × 7,405.05
4. Step 4: Simplify right side
   11,178.67x = 114,284,580.32
5. Step 5: Solve for x
   x = 114,284,580.32/11,178.67
6. Step 6: Final answer
   x = 10,223.45