Finding the Fourth Proportional to 12,437.82, 17,180.55 and 9,288.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,437.82 : 17,180.55 = 9,288.54 : x
2. Step 2: Convert to fraction form
   12,437.82/17,180.55 = 9,288.54/x
3. Step 3: Cross multiply
   12,437.82x = 17,180.55 × 9,288.54
4. Step 4: Simplify right side
   12,437.82x = 159,582,225.90
5. Step 5: Solve for x
   x = 159,582,225.90/12,437.82
6. Step 6: Final answer
   x = 12,830.40