Finding the Fourth Proportional to 13,227.34, 19,855.60 and 7,686.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,227.34 : 19,855.60 = 7,686.94 : x
2. Step 2: Convert to fraction form
   13,227.34/19,855.60 = 7,686.94/x
3. Step 3: Cross multiply
   13,227.34x = 19,855.60 × 7,686.94
4. Step 4: Simplify right side
   13,227.34x = 152,628,805.86
5. Step 5: Solve for x
   x = 152,628,805.86/13,227.34
6. Step 6: Final answer
   x = 11,538.89