Finding the Fourth Proportional to 10,814.74, 14,915.68 and 7,456.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,814.74 : 14,915.68 = 7,456.78 : x
2. Step 2: Convert to fraction form
   10,814.74/14,915.68 = 7,456.78/x
3. Step 3: Cross multiply
   10,814.74x = 14,915.68 × 7,456.78
4. Step 4: Simplify right side
   10,814.74x = 111,222,944.31
5. Step 5: Solve for x
   x = 111,222,944.31/10,814.74
6. Step 6: Final answer
   x = 10,284.38