Finding the Fourth Proportional to 9,088.72, 12,542.88 and 5,551.36

Step by Step Solution

1. Step 1: Write the proportion equation
   9,088.72 : 12,542.88 = 5,551.36 : x
2. Step 2: Convert to fraction form
   9,088.72/12,542.88 = 5,551.36/x
3. Step 3: Cross multiply
   9,088.72x = 12,542.88 × 5,551.36
4. Step 4: Simplify right side
   9,088.72x = 69,630,042.32
5. Step 5: Solve for x
   x = 69,630,042.32/9,088.72
6. Step 6: Final answer
   x = 7,661.15