Finding the Fourth Proportional to 13,000.31, 17,942.57 and 7,967.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,000.31 : 17,942.57 = 7,967.31 : x
2. Step 2: Convert to fraction form
   13,000.31/17,942.57 = 7,967.31/x
3. Step 3: Cross multiply
   13,000.31x = 17,942.57 × 7,967.31
4. Step 4: Simplify right side
   13,000.31x = 142,953,977.55
5. Step 5: Solve for x
   x = 142,953,977.55/13,000.31
6. Step 6: Final answer
   x = 10,996.20