Finding the Fourth Proportional to 12,156.67, 18,235.82 and 3,836.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,156.67 : 18,235.82 = 3,836.89 : x
2. Step 2: Convert to fraction form
   12,156.67/18,235.82 = 3,836.89/x
3. Step 3: Cross multiply
   12,156.67x = 18,235.82 × 3,836.89
4. Step 4: Simplify right side
   12,156.67x = 69,968,835.40
5. Step 5: Solve for x
   x = 69,968,835.40/12,156.67
6. Step 6: Final answer
   x = 5,755.59