Finding the Fourth Proportional to 11,684.55, 16,115.78 and 7,436.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,684.55 : 16,115.78 = 7,436.31 : x
2. Step 2: Convert to fraction form
   11,684.55/16,115.78 = 7,436.31/x
3. Step 3: Cross multiply
   11,684.55x = 16,115.78 × 7,436.31
4. Step 4: Simplify right side
   11,684.55x = 119,841,898.79
5. Step 5: Solve for x
   x = 119,841,898.79/11,684.55
6. Step 6: Final answer
   x = 10,256.44