Finding the Fourth Proportional to 12,665.54, 17,481.83 and 7,288.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,665.54 : 17,481.83 = 7,288.58 : x
2. Step 2: Convert to fraction form
   12,665.54/17,481.83 = 7,288.58/x
3. Step 3: Cross multiply
   12,665.54x = 17,481.83 × 7,288.58
4. Step 4: Simplify right side
   12,665.54x = 127,417,592.65
5. Step 5: Solve for x
   x = 127,417,592.65/12,665.54
6. Step 6: Final answer
   x = 10,060.18