Finding the Fourth Proportional to 10,201.75, 14,078.23 and 5,725.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,201.75 : 14,078.23 = 5,725.15 : x
2. Step 2: Convert to fraction form
   10,201.75/14,078.23 = 5,725.15/x
3. Step 3: Cross multiply
   10,201.75x = 14,078.23 × 5,725.15
4. Step 4: Simplify right side
   10,201.75x = 80,599,978.48
5. Step 5: Solve for x
   x = 80,599,978.48/10,201.75
6. Step 6: Final answer
   x = 7,900.60