Finding the Fourth Proportional to 12,112.71, 18,142.69 and 5,859.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,112.71 : 18,142.69 = 5,859.53 : x
2. Step 2: Convert to fraction form
   12,112.71/18,142.69 = 5,859.53/x
3. Step 3: Cross multiply
   12,112.71x = 18,142.69 × 5,859.53
4. Step 4: Simplify right side
   12,112.71x = 106,307,607.04
5. Step 5: Solve for x
   x = 106,307,607.04/12,112.71
6. Step 6: Final answer
   x = 8,776.53