Finding the Fourth Proportional to 13,037.16, 17,990.78 and 7,068.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,037.16 : 17,990.78 = 7,068.72 : x
2. Step 2: Convert to fraction form
   13,037.16/17,990.78 = 7,068.72/x
3. Step 3: Cross multiply
   13,037.16x = 17,990.78 × 7,068.72
4. Step 4: Simplify right side
   13,037.16x = 127,171,786.40
5. Step 5: Solve for x
   x = 127,171,786.40/13,037.16
6. Step 6: Final answer
   x = 9,754.56