Finding the Fourth Proportional to 11,971.67, 16,521.71 and 7,931.52

Step by Step Solution

1. Step 1: Write the proportion equation
   11,971.67 : 16,521.71 = 7,931.52 : x
2. Step 2: Convert to fraction form
   11,971.67/16,521.71 = 7,931.52/x
3. Step 3: Cross multiply
   11,971.67x = 16,521.71 × 7,931.52
4. Step 4: Simplify right side
   11,971.67x = 131,042,233.64
5. Step 5: Solve for x
   x = 131,042,233.64/11,971.67
6. Step 6: Final answer
   x = 10,946.03