Finding the Fourth Proportional to 9,091.55, 13,631.25 and 7,338.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,091.55 : 13,631.25 = 7,338.71 : x
2. Step 2: Convert to fraction form
   9,091.55/13,631.25 = 7,338.71/x
3. Step 3: Cross multiply
   9,091.55x = 13,631.25 × 7,338.71
4. Step 4: Simplify right side
   9,091.55x = 100,035,790.69
5. Step 5: Solve for x
   x = 100,035,790.69/9,091.55
6. Step 6: Final answer
   x = 11,003.16