Finding the Fourth Proportional to 9,180.54, 12,658.01 and 7,761.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,180.54 : 12,658.01 = 7,761.69 : x
2. Step 2: Convert to fraction form
   9,180.54/12,658.01 = 7,761.69/x
3. Step 3: Cross multiply
   9,180.54x = 12,658.01 × 7,761.69
4. Step 4: Simplify right side
   9,180.54x = 98,247,510.83
5. Step 5: Solve for x
   x = 98,247,510.83/9,180.54
6. Step 6: Final answer
   x = 10,701.71