Finding the Fourth Proportional to 11,667.50, 16,101.15 and 7,478.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,667.50 : 16,101.15 = 7,478.18 : x
2. Step 2: Convert to fraction form
   11,667.50/16,101.15 = 7,478.18/x
3. Step 3: Cross multiply
   11,667.50x = 16,101.15 × 7,478.18
4. Step 4: Simplify right side
   11,667.50x = 120,407,297.91
5. Step 5: Solve for x
   x = 120,407,297.91/11,667.50
6. Step 6: Final answer
   x = 10,319.89