Finding the Fourth Proportional to 12,682.50, 17,503.16 and 7,305.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,682.50 : 17,503.16 = 7,305.12 : x
2. Step 2: Convert to fraction form
   12,682.50/17,503.16 = 7,305.12/x
3. Step 3: Cross multiply
   12,682.50x = 17,503.16 × 7,305.12
4. Step 4: Simplify right side
   12,682.50x = 127,862,684.18
5. Step 5: Solve for x
   x = 127,862,684.18/12,682.50
6. Step 6: Final answer
   x = 10,081.82