Finding the Fourth Proportional to 12,614.22, 18,901.88 and 7,987.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,614.22 : 18,901.88 = 7,987.50 : x
2. Step 2: Convert to fraction form
   12,614.22/18,901.88 = 7,987.50/x
3. Step 3: Cross multiply
   12,614.22x = 18,901.88 × 7,987.50
4. Step 4: Simplify right side
   12,614.22x = 150,978,766.50
5. Step 5: Solve for x
   x = 150,978,766.50/12,614.22
6. Step 6: Final answer
   x = 11,968.93