Finding the Fourth Proportional to 12,491.52, 17,240.04 and 7,186.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,491.52 : 17,240.04 = 7,186.32 : x
2. Step 2: Convert to fraction form
   12,491.52/17,240.04 = 7,186.32/x
3. Step 3: Cross multiply
   12,491.52x = 17,240.04 × 7,186.32
4. Step 4: Simplify right side
   12,491.52x = 123,892,444.25
5. Step 5: Solve for x
   x = 123,892,444.25/12,491.52
6. Step 6: Final answer
   x = 9,918.12