Finding the Fourth Proportional to 10,878.78, 16,281.09 and 7,548.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,878.78 : 16,281.09 = 7,548.15 : x
2. Step 2: Convert to fraction form
   10,878.78/16,281.09 = 7,548.15/x
3. Step 3: Cross multiply
   10,878.78x = 16,281.09 × 7,548.15
4. Step 4: Simplify right side
   10,878.78x = 122,892,109.48
5. Step 5: Solve for x
   x = 122,892,109.48/10,878.78
6. Step 6: Final answer
   x = 11,296.50