Finding the Fourth Proportional to 10,878, 15,011.68 and 5,910

Step by Step Solution

1. Step 1: Write the proportion equation
   10,878 : 15,011.68 = 5,910 : x
2. Step 2: Convert to fraction form
   10,878/15,011.68 = 5,910/x
3. Step 3: Cross multiply
   10,878x = 15,011.68 × 5,910
4. Step 4: Simplify right side
   10,878x = 88,719,028.80
5. Step 5: Solve for x
   x = 88,719,028.80/10,878
6. Step 6: Final answer
   x = 8,155.82