Finding the Fourth Proportional to 9,072.56, 13,550.50 and 7,760.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,072.56 : 13,550.50 = 7,760.72 : x
2. Step 2: Convert to fraction form
   9,072.56/13,550.50 = 7,760.72/x
3. Step 3: Cross multiply
   9,072.56x = 13,550.50 × 7,760.72
4. Step 4: Simplify right side
   9,072.56x = 105,161,636.36
5. Step 5: Solve for x
   x = 105,161,636.36/9,072.56
6. Step 6: Final answer
   x = 11,591.18