Finding the Fourth Proportional to 12,271.16, 18,406.50 and 3,506

Step by Step Solution

1. Step 1: Write the proportion equation
   12,271.16 : 18,406.50 = 3,506 : x
2. Step 2: Convert to fraction form
   12,271.16/18,406.50 = 3,506/x
3. Step 3: Cross multiply
   12,271.16x = 18,406.50 × 3,506
4. Step 4: Simplify right side
   12,271.16x = 64,533,189
5. Step 5: Solve for x
   x = 64,533,189/12,271.16
6. Step 6: Final answer
   x = 5,258.93