Finding the Fourth Proportional to 12,158.58, 18,236.35 and 5,141.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,158.58 : 18,236.35 = 5,141.38 : x
2. Step 2: Convert to fraction form
   12,158.58/18,236.35 = 5,141.38/x
3. Step 3: Cross multiply
   12,158.58x = 18,236.35 × 5,141.38
4. Step 4: Simplify right side
   12,158.58x = 93,760,005.16
5. Step 5: Solve for x
   x = 93,760,005.16/12,158.58
6. Step 6: Final answer
   x = 7,711.43