Finding the Fourth Proportional to 12,789.37, 17,643.65 and 7,481.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,789.37 : 17,643.65 = 7,481.84 : x
2. Step 2: Convert to fraction form
   12,789.37/17,643.65 = 7,481.84/x
3. Step 3: Cross multiply
   12,789.37x = 17,643.65 × 7,481.84
4. Step 4: Simplify right side
   12,789.37x = 132,006,973.02
5. Step 5: Solve for x
   x = 132,006,973.02/12,789.37
6. Step 6: Final answer
   x = 10,321.62