Finding the Fourth Proportional to 11,493.31, 15,857.97 and 7,015.43

Step by Step Solution

1. Step 1: Write the proportion equation
   11,493.31 : 15,857.97 = 7,015.43 : x
2. Step 2: Convert to fraction form
   11,493.31/15,857.97 = 7,015.43/x
3. Step 3: Cross multiply
   11,493.31x = 15,857.97 × 7,015.43
4. Step 4: Simplify right side
   11,493.31x = 111,250,478.48
5. Step 5: Solve for x
   x = 111,250,478.48/11,493.31
6. Step 6: Final answer
   x = 9,679.59