Finding the Fourth Proportional to 12,134.56, 18,201.83 and 3,815.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,134.56 : 18,201.83 = 3,815.31 : x
2. Step 2: Convert to fraction form
   12,134.56/18,201.83 = 3,815.31/x
3. Step 3: Cross multiply
   12,134.56x = 18,201.83 × 3,815.31
4. Step 4: Simplify right side
   12,134.56x = 69,445,624.02
5. Step 5: Solve for x
   x = 69,445,624.02/12,134.56
6. Step 6: Final answer
   x = 5,722.96