Finding the Fourth Proportional to 11,775.72, 17,592.40 and 7,581.54

Step by Step Solution

1. Step 1: Write the proportion equation
   11,775.72 : 17,592.40 = 7,581.54 : x
2. Step 2: Convert to fraction form
   11,775.72/17,592.40 = 7,581.54/x
3. Step 3: Cross multiply
   11,775.72x = 17,592.40 × 7,581.54
4. Step 4: Simplify right side
   11,775.72x = 133,377,465.34
5. Step 5: Solve for x
   x = 133,377,465.34/11,775.72
6. Step 6: Final answer
   x = 11,326.48