Finding the Fourth Proportional to 8,151.80, 12,235.89 and 5,510.99

Step by Step Solution

1. Step 1: Write the proportion equation
   8,151.80 : 12,235.89 = 5,510.99 : x
2. Step 2: Convert to fraction form
   8,151.80/12,235.89 = 5,510.99/x
3. Step 3: Cross multiply
   8,151.80x = 12,235.89 × 5,510.99
4. Step 4: Simplify right side
   8,151.80x = 67,431,806.25
5. Step 5: Solve for x
   x = 67,431,806.25/8,151.80
6. Step 6: Final answer
   x = 8,272.02