Finding the Fourth Proportional to 9,142.50, 12,623.78 and 7,014.65

Step by Step Solution

1. Step 1: Write the proportion equation
   9,142.50 : 12,623.78 = 7,014.65 : x
2. Step 2: Convert to fraction form
   9,142.50/12,623.78 = 7,014.65/x
3. Step 3: Cross multiply
   9,142.50x = 12,623.78 × 7,014.65
4. Step 4: Simplify right side
   9,142.50x = 88,551,398.38
5. Step 5: Solve for x
   x = 88,551,398.38/9,142.50
6. Step 6: Final answer
   x = 9,685.69