Finding the Fourth Proportional to 12,087.26, 18,117.92 and 5,065.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,087.26 : 18,117.92 = 5,065.50 : x
2. Step 2: Convert to fraction form
   12,087.26/18,117.92 = 5,065.50/x
3. Step 3: Cross multiply
   12,087.26x = 18,117.92 × 5,065.50
4. Step 4: Simplify right side
   12,087.26x = 91,776,323.76
5. Step 5: Solve for x
   x = 91,776,323.76/12,087.26
6. Step 6: Final answer
   x = 7,592.81