Finding the Fourth Proportional to 11,647.72, 17,478.76 and 7,490.38

Step by Step Solution

1. Step 1: Write the proportion equation
   11,647.72 : 17,478.76 = 7,490.38 : x
2. Step 2: Convert to fraction form
   11,647.72/17,478.76 = 7,490.38/x
3. Step 3: Cross multiply
   11,647.72x = 17,478.76 × 7,490.38
4. Step 4: Simplify right side
   11,647.72x = 130,922,554.33
5. Step 5: Solve for x
   x = 130,922,554.33/11,647.72
6. Step 6: Final answer
   x = 11,240.19