Finding the Fourth Proportional to 11,700.18, 16,141.42 and 8,506.47

Step by Step Solution

1. Step 1: Write the proportion equation
   11,700.18 : 16,141.42 = 8,506.47 : x
2. Step 2: Convert to fraction form
   11,700.18/16,141.42 = 8,506.47/x
3. Step 3: Cross multiply
   11,700.18x = 16,141.42 × 8,506.47
4. Step 4: Simplify right side
   11,700.18x = 137,306,504.99
5. Step 5: Solve for x
   x = 137,306,504.99/11,700.18
6. Step 6: Final answer
   x = 11,735.42