Finding the Fourth Proportional to 12,381.50, 18,570.94 and 3,496.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,381.50 : 18,570.94 = 3,496.61 : x
2. Step 2: Convert to fraction form
   12,381.50/18,570.94 = 3,496.61/x
3. Step 3: Cross multiply
   12,381.50x = 18,570.94 × 3,496.61
4. Step 4: Simplify right side
   12,381.50x = 64,935,372.20
5. Step 5: Solve for x
   x = 64,935,372.20/12,381.50
6. Step 6: Final answer
   x = 5,244.55