Finding the Fourth Proportional to 12,281.82, 18,426.38 and 5,711.91

Step by Step Solution

1. Step 1: Write the proportion equation
   12,281.82 : 18,426.38 = 5,711.91 : x
2. Step 2: Convert to fraction form
   12,281.82/18,426.38 = 5,711.91/x
3. Step 3: Cross multiply
   12,281.82x = 18,426.38 × 5,711.91
4. Step 4: Simplify right side
   12,281.82x = 105,249,824.19
5. Step 5: Solve for x
   x = 105,249,824.19/12,281.82
6. Step 6: Final answer
   x = 8,569.56