Finding the Fourth Proportional to 10,188.78, 15,284.79 and 4,995.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,188.78 : 15,284.79 = 4,995.06 : x
2. Step 2: Convert to fraction form
   10,188.78/15,284.79 = 4,995.06/x
3. Step 3: Cross multiply
   10,188.78x = 15,284.79 × 4,995.06
4. Step 4: Simplify right side
   10,188.78x = 76,348,443.14
5. Step 5: Solve for x
   x = 76,348,443.14/10,188.78
6. Step 6: Final answer
   x = 7,493.38