Finding the Fourth Proportional to 10,104.55, 15,160.47 and 5,176.51

Step by Step Solution

1. Step 1: Write the proportion equation
   10,104.55 : 15,160.47 = 5,176.51 : x
2. Step 2: Convert to fraction form
   10,104.55/15,160.47 = 5,176.51/x
3. Step 3: Cross multiply
   10,104.55x = 15,160.47 × 5,176.51
4. Step 4: Simplify right side
   10,104.55x = 78,478,324.56
5. Step 5: Solve for x
   x = 78,478,324.56/10,104.55
6. Step 6: Final answer
   x = 7,766.63