Finding the Fourth Proportional to 12,250.68, 18,372.72 and 3,486

Step by Step Solution

1. Step 1: Write the proportion equation
   12,250.68 : 18,372.72 = 3,486 : x
2. Step 2: Convert to fraction form
   12,250.68/18,372.72 = 3,486/x
3. Step 3: Cross multiply
   12,250.68x = 18,372.72 × 3,486
4. Step 4: Simplify right side
   12,250.68x = 64,047,301.92
5. Step 5: Solve for x
   x = 64,047,301.92/12,250.68
6. Step 6: Final answer
   x = 5,228.06