Finding the Fourth Proportional to 8,654.67, 12,981.34 and 5,323.36

Step by Step Solution

1. Step 1: Write the proportion equation
   8,654.67 : 12,981.34 = 5,323.36 : x
2. Step 2: Convert to fraction form
   8,654.67/12,981.34 = 5,323.36/x
3. Step 3: Cross multiply
   8,654.67x = 12,981.34 × 5,323.36
4. Step 4: Simplify right side
   8,654.67x = 69,104,376.95
5. Step 5: Solve for x
   x = 69,104,376.95/8,654.67
6. Step 6: Final answer
   x = 7,984.63