Finding the Fourth Proportional to 12,291.31, 16,957.18 and 7,567.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,291.31 : 16,957.18 = 7,567.39 : x
2. Step 2: Convert to fraction form
   12,291.31/16,957.18 = 7,567.39/x
3. Step 3: Cross multiply
   12,291.31x = 16,957.18 × 7,567.39
4. Step 4: Simplify right side
   12,291.31x = 128,321,625.02
5. Step 5: Solve for x
   x = 128,321,625.02/12,291.31
6. Step 6: Final answer
   x = 10,440.03