Finding the Fourth Proportional to 11,978.52, 16,532.46 and 9,141.24

Step by Step Solution

1. Step 1: Write the proportion equation
   11,978.52 : 16,532.46 = 9,141.24 : x
2. Step 2: Convert to fraction form
   11,978.52/16,532.46 = 9,141.24/x
3. Step 3: Cross multiply
   11,978.52x = 16,532.46 × 9,141.24
4. Step 4: Simplify right side
   11,978.52x = 151,127,184.65
5. Step 5: Solve for x
   x = 151,127,184.65/11,978.52
6. Step 6: Final answer
   x = 12,616.52