Finding the Fourth Proportional to 11,196.42, 16,762.20 and 8,434.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,196.42 : 16,762.20 = 8,434.72 : x
2. Step 2: Convert to fraction form
   11,196.42/16,762.20 = 8,434.72/x
3. Step 3: Cross multiply
   11,196.42x = 16,762.20 × 8,434.72
4. Step 4: Simplify right side
   11,196.42x = 141,384,463.58
5. Step 5: Solve for x
   x = 141,384,463.58/11,196.42
6. Step 6: Final answer
   x = 12,627.65