Finding the Fourth Proportional to 11,280.38, 15,559.74 and 9,047.62

Step by Step Solution

1. Step 1: Write the proportion equation
   11,280.38 : 15,559.74 = 9,047.62 : x
2. Step 2: Convert to fraction form
   11,280.38/15,559.74 = 9,047.62/x
3. Step 3: Cross multiply
   11,280.38x = 15,559.74 × 9,047.62
4. Step 4: Simplify right side
   11,280.38x = 140,778,614.82
5. Step 5: Solve for x
   x = 140,778,614.82/11,280.38
6. Step 6: Final answer
   x = 12,479.95