Finding the Fourth Proportional to 12,298.77, 18,433.71 and 5,711.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,298.77 : 18,433.71 = 5,711.07 : x
2. Step 2: Convert to fraction form
   12,298.77/18,433.71 = 5,711.07/x
3. Step 3: Cross multiply
   12,298.77x = 18,433.71 × 5,711.07
4. Step 4: Simplify right side
   12,298.77x = 105,276,208.17
5. Step 5: Solve for x
   x = 105,276,208.17/12,298.77
6. Step 6: Final answer
   x = 8,559.90