Finding the Fourth Proportional to 10,131.37, 15,187.33 and 7,160.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131.37 : 15,187.33 = 7,160.54 : x
2. Step 2: Convert to fraction form
   10,131.37/15,187.33 = 7,160.54/x
3. Step 3: Cross multiply
   10,131.37x = 15,187.33 × 7,160.54
4. Step 4: Simplify right side
   10,131.37x = 108,749,483.96
5. Step 5: Solve for x
   x = 108,749,483.96/10,131.37
6. Step 6: Final answer
   x = 10,733.94