Finding the Fourth Proportional to 12,446.31, 18,666.53 and 3,561.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,446.31 : 18,666.53 = 3,561.37 : x
2. Step 2: Convert to fraction form
   12,446.31/18,666.53 = 3,561.37/x
3. Step 3: Cross multiply
   12,446.31x = 18,666.53 × 3,561.37
4. Step 4: Simplify right side
   12,446.31x = 66,478,368.83
5. Step 5: Solve for x
   x = 66,478,368.83/12,446.31
6. Step 6: Final answer
   x = 5,341.21