Finding the Fourth Proportional to 12,706.83, 17,530.38 and 7,923.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,706.83 : 17,530.38 = 7,923.96 : x
2. Step 2: Convert to fraction form
   12,706.83/17,530.38 = 7,923.96/x
3. Step 3: Cross multiply
   12,706.83x = 17,530.38 × 7,923.96
4. Step 4: Simplify right side
   12,706.83x = 138,910,029.90
5. Step 5: Solve for x
   x = 138,910,029.90/12,706.83
6. Step 6: Final answer
   x = 10,931.92