Finding the Fourth Proportional to 13,007.81, 17,950.83 and 7,039.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,007.81 : 17,950.83 = 7,039.47 : x
2. Step 2: Convert to fraction form
   13,007.81/17,950.83 = 7,039.47/x
3. Step 3: Cross multiply
   13,007.81x = 17,950.83 × 7,039.47
4. Step 4: Simplify right side
   13,007.81x = 126,364,338.94
5. Step 5: Solve for x
   x = 126,364,338.94/13,007.81
6. Step 6: Final answer
   x = 9,714.50