Finding the Fourth Proportional to 9,091.35, 12,543.82 and 5,553.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,091.35 : 12,543.82 = 5,553.27 : x
2. Step 2: Convert to fraction form
   9,091.35/12,543.82 = 5,553.27/x
3. Step 3: Cross multiply
   9,091.35x = 12,543.82 × 5,553.27
4. Step 4: Simplify right side
   9,091.35x = 69,659,205.41
5. Step 5: Solve for x
   x = 69,659,205.41/9,091.35
6. Step 6: Final answer
   x = 7,662.14