Finding the Fourth Proportional to 12,943.47, 17,861.83 and 7,279.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,943.47 : 17,861.83 = 7,279.17 : x
2. Step 2: Convert to fraction form
   12,943.47/17,861.83 = 7,279.17/x
3. Step 3: Cross multiply
   12,943.47x = 17,861.83 × 7,279.17
4. Step 4: Simplify right side
   12,943.47x = 130,019,297.08
5. Step 5: Solve for x
   x = 130,019,297.08/12,943.47
6. Step 6: Final answer
   x = 10,045.17