Finding the Fourth Proportional to 9,091.98, 12,542.85 and 5,554.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,091.98 : 12,542.85 = 5,554.53 : x
2. Step 2: Convert to fraction form
   9,091.98/12,542.85 = 5,554.53/x
3. Step 3: Cross multiply
   9,091.98x = 12,542.85 × 5,554.53
4. Step 4: Simplify right side
   9,091.98x = 69,669,636.61
5. Step 5: Solve for x
   x = 69,669,636.61/9,091.98
6. Step 6: Final answer
   x = 7,662.76