Finding the Fourth Proportional to 19,085.46, 28,636.71 and 7,399.59

Step by Step Solution

1. Step 1: Write the proportion equation
   19,085.46 : 28,636.71 = 7,399.59 : x
2. Step 2: Convert to fraction form
   19,085.46/28,636.71 = 7,399.59/x
3. Step 3: Cross multiply
   19,085.46x = 28,636.71 × 7,399.59
4. Step 4: Simplify right side
   19,085.46x = 211,899,912.95
5. Step 5: Solve for x
   x = 211,899,912.95/19,085.46
6. Step 6: Final answer
   x = 11,102.69