Finding the Fourth Proportional to 10,885.78, 16,300.99 and 7,176.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,885.78 : 16,300.99 = 7,176.78 : x
2. Step 2: Convert to fraction form
   10,885.78/16,300.99 = 7,176.78/x
3. Step 3: Cross multiply
   10,885.78x = 16,300.99 × 7,176.78
4. Step 4: Simplify right side
   10,885.78x = 116,988,619.01
5. Step 5: Solve for x
   x = 116,988,619.01/10,885.78
6. Step 6: Final answer
   x = 10,746.92