Finding the Fourth Proportional to 12,013.31, 18,022.85 and 5,437.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,013.31 : 18,022.85 = 5,437.73 : x
2. Step 2: Convert to fraction form
   12,013.31/18,022.85 = 5,437.73/x
3. Step 3: Cross multiply
   12,013.31x = 18,022.85 × 5,437.73
4. Step 4: Simplify right side
   12,013.31x = 98,003,460.98
5. Step 5: Solve for x
   x = 98,003,460.98/12,013.31
6. Step 6: Final answer
   x = 8,157.90