Finding the Fourth Proportional to 9,065.78, 12,510.98 and 5,087.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,065.78 : 12,510.98 = 5,087.18 : x
2. Step 2: Convert to fraction form
   9,065.78/12,510.98 = 5,087.18/x
3. Step 3: Cross multiply
   9,065.78x = 12,510.98 × 5,087.18
4. Step 4: Simplify right side
   9,065.78x = 63,645,607.24
5. Step 5: Solve for x
   x = 63,645,607.24/9,065.78
6. Step 6: Final answer
   x = 7,020.42