Finding the Fourth Proportional to 12,426.34, 18,633.12 and 3,660.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,426.34 : 18,633.12 = 3,660.10 : x
2. Step 2: Convert to fraction form
   12,426.34/18,633.12 = 3,660.10/x
3. Step 3: Cross multiply
   12,426.34x = 18,633.12 × 3,660.10
4. Step 4: Simplify right side
   12,426.34x = 68,199,082.51
5. Step 5: Solve for x
   x = 68,199,082.51/12,426.34
6. Step 6: Final answer
   x = 5,488.27