Finding the Fourth Proportional to 10,113.82, 15,168.90 and 7,180.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,113.82 : 15,168.90 = 7,180.20 : x
2. Step 2: Convert to fraction form
   10,113.82/15,168.90 = 7,180.20/x
3. Step 3: Cross multiply
   10,113.82x = 15,168.90 × 7,180.20
4. Step 4: Simplify right side
   10,113.82x = 108,915,762.71
5. Step 5: Solve for x
   x = 108,915,762.71/10,113.82
6. Step 6: Final answer
   x = 10,769.01