Finding the Fourth Proportional to 12,939.48, 17,855.25 and 7,272.93

Step by Step Solution

1. Step 1: Write the proportion equation
   12,939.48 : 17,855.25 = 7,272.93 : x
2. Step 2: Convert to fraction form
   12,939.48/17,855.25 = 7,272.93/x
3. Step 3: Cross multiply
   12,939.48x = 17,855.25 × 7,272.93
4. Step 4: Simplify right side
   12,939.48x = 129,859,889.15
5. Step 5: Solve for x
   x = 129,859,889.15/12,939.48
6. Step 6: Final answer
   x = 10,035.94