Finding the Fourth Proportional to 12,988.37, 17,912.18 and 8,510.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,988.37 : 17,912.18 = 8,510.49 : x
2. Step 2: Convert to fraction form
   12,988.37/17,912.18 = 8,510.49/x
3. Step 3: Cross multiply
   12,988.37x = 17,912.18 × 8,510.49
4. Step 4: Simplify right side
   12,988.37x = 152,441,386.22
5. Step 5: Solve for x
   x = 152,441,386.22/12,988.37
6. Step 6: Final answer
   x = 11,736.76