Finding the Fourth Proportional to 11,939.94, 17,904.15 and 5,007.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,939.94 : 17,904.15 = 5,007.78 : x
2. Step 2: Convert to fraction form
   11,939.94/17,904.15 = 5,007.78/x
3. Step 3: Cross multiply
   11,939.94x = 17,904.15 × 5,007.78
4. Step 4: Simplify right side
   11,939.94x = 89,660,044.29
5. Step 5: Solve for x
   x = 89,660,044.29/11,939.94
6. Step 6: Final answer
   x = 7,509.25