Finding the Fourth Proportional to 12,228.66, 18,334.01 and 3,903.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,228.66 : 18,334.01 = 3,903.89 : x
2. Step 2: Convert to fraction form
   12,228.66/18,334.01 = 3,903.89/x
3. Step 3: Cross multiply
   12,228.66x = 18,334.01 × 3,903.89
4. Step 4: Simplify right side
   12,228.66x = 71,573,876.39
5. Step 5: Solve for x
   x = 71,573,876.39/12,228.66
6. Step 6: Final answer
   x = 5,852.96