Finding the Fourth Proportional to 9,081.55, 12,538.12 and 7,200.73

Step by Step Solution

1. Step 1: Write the proportion equation
   9,081.55 : 12,538.12 = 7,200.73 : x
2. Step 2: Convert to fraction form
   9,081.55/12,538.12 = 7,200.73/x
3. Step 3: Cross multiply
   9,081.55x = 12,538.12 × 7,200.73
4. Step 4: Simplify right side
   9,081.55x = 90,283,572.14
5. Step 5: Solve for x
   x = 90,283,572.14/9,081.55
6. Step 6: Final answer
   x = 9,941.43