Finding the Fourth Proportional to 11,861.62, 16,366.71 and 7,146.16

Step by Step Solution

1. Step 1: Write the proportion equation
   11,861.62 : 16,366.71 = 7,146.16 : x
2. Step 2: Convert to fraction form
   11,861.62/16,366.71 = 7,146.16/x
3. Step 3: Cross multiply
   11,861.62x = 16,366.71 × 7,146.16
4. Step 4: Simplify right side
   11,861.62x = 116,959,128.33
5. Step 5: Solve for x
   x = 116,959,128.33/11,861.62
6. Step 6: Final answer
   x = 9,860.30