Finding the Fourth Proportional to 9,554.72, 13,187.16 and 5,578.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,554.72 : 13,187.16 = 5,578.16 : x
2. Step 2: Convert to fraction form
   9,554.72/13,187.16 = 5,578.16/x
3. Step 3: Cross multiply
   9,554.72x = 13,187.16 × 5,578.16
4. Step 4: Simplify right side
   9,554.72x = 73,560,088.43
5. Step 5: Solve for x
   x = 73,560,088.43/9,554.72
6. Step 6: Final answer
   x = 7,698.82