Finding the Fourth Proportional to 12,719.34, 17,554.70 and 7,684.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,719.34 : 17,554.70 = 7,684.27 : x
2. Step 2: Convert to fraction form
   12,719.34/17,554.70 = 7,684.27/x
3. Step 3: Cross multiply
   12,719.34x = 17,554.70 × 7,684.27
4. Step 4: Simplify right side
   12,719.34x = 134,895,029.89
5. Step 5: Solve for x
   x = 134,895,029.89/12,719.34
6. Step 6: Final answer
   x = 10,605.51