Finding the Fourth Proportional to 10,443.68, 15,667.84 and 3,518

Step by Step Solution

1. Step 1: Write the proportion equation
   10,443.68 : 15,667.84 = 3,518 : x
2. Step 2: Convert to fraction form
   10,443.68/15,667.84 = 3,518/x
3. Step 3: Cross multiply
   10,443.68x = 15,667.84 × 3,518
4. Step 4: Simplify right side
   10,443.68x = 55,119,461.12
5. Step 5: Solve for x
   x = 55,119,461.12/10,443.68
6. Step 6: Final answer
   x = 5,277.78