Finding the Fourth Proportional to 7,891.43, 11,781.15 and 7,016.63

Step by Step Solution

1. Step 1: Write the proportion equation
   7,891.43 : 11,781.15 = 7,016.63 : x
2. Step 2: Convert to fraction form
   7,891.43/11,781.15 = 7,016.63/x
3. Step 3: Cross multiply
   7,891.43x = 11,781.15 × 7,016.63
4. Step 4: Simplify right side
   7,891.43x = 82,663,885.31
5. Step 5: Solve for x
   x = 82,663,885.31/7,891.43
6. Step 6: Final answer
   x = 10,475.15