Finding the Fourth Proportional to 10,878.75, 15,012.77 and 5,910.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,878.75 : 15,012.77 = 5,910.75 : x
2. Step 2: Convert to fraction form
   10,878.75/15,012.77 = 5,910.75/x
3. Step 3: Cross multiply
   10,878.75x = 15,012.77 × 5,910.75
4. Step 4: Simplify right side
   10,878.75x = 88,736,700.72
5. Step 5: Solve for x
   x = 88,736,700.72/10,878.75
6. Step 6: Final answer
   x = 8,156.88