Finding the Fourth Proportional to 13,033.48, 17,985.76 and 7,725.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,033.48 : 17,985.76 = 7,725.15 : x
2. Step 2: Convert to fraction form
   13,033.48/17,985.76 = 7,725.15/x
3. Step 3: Cross multiply
   13,033.48x = 17,985.76 × 7,725.15
4. Step 4: Simplify right side
   13,033.48x = 138,942,693.86
5. Step 5: Solve for x
   x = 138,942,693.86/13,033.48
6. Step 6: Final answer
   x = 10,660.44