Finding the Fourth Proportional to 11,150.27, 15,389.33 and 8,470.37

Step by Step Solution

1. Step 1: Write the proportion equation
   11,150.27 : 15,389.33 = 8,470.37 : x
2. Step 2: Convert to fraction form
   11,150.27/15,389.33 = 8,470.37/x
3. Step 3: Cross multiply
   11,150.27x = 15,389.33 × 8,470.37
4. Step 4: Simplify right side
   11,150.27x = 130,353,199.85
5. Step 5: Solve for x
   x = 130,353,199.85/11,150.27
6. Step 6: Final answer
   x = 11,690.59