Finding the Fourth Proportional to 11,578.74, 15,972.15 and 7,328.52

Step by Step Solution

1. Step 1: Write the proportion equation
   11,578.74 : 15,972.15 = 7,328.52 : x
2. Step 2: Convert to fraction form
   11,578.74/15,972.15 = 7,328.52/x
3. Step 3: Cross multiply
   11,578.74x = 15,972.15 × 7,328.52
4. Step 4: Simplify right side
   11,578.74x = 117,052,220.72
5. Step 5: Solve for x
   x = 117,052,220.72/11,578.74
6. Step 6: Final answer
   x = 10,109.24